My Best Reading
Student Book 4
Answer Key
Unit 01
There’s a Pig in the House!
Key Words (p. 07)
A. 1. pet
2. treat
3. trick
4. tear up
5. rodents
6. cage
Unit 02
Can You Guess My Name?
Key Words (p. 13)
A. 1. peek
2. guess
3. criminal
4. backwards
5. pipe
6. cartoon
B. 1. cage
2. pets
3. tricks
4. Tear up
5. treat
6. Rodents
B. 1. backwards
2. pipe
3. cartoon
4. criminal
5. guess
6. peek
While you read (p. 09)
They need exercise, so their cage should be big.
Comprehension (pp. 10-11)
A. ⓐ
B. 1. T 2. T 3. F
C. 1. ⓒ 2. ⓐ, ⓑ 3. ⓑ
D. safe, big, full, treat, pet, tricks
Link to Write (p. 11)
How to Care for My Pet
I want to have an iguana. It’s important to
take care of it properly.
First, it is happy when it is alone.
Next, it needs a big cage and fine sand.
Finally,
it
vegetables.
fruit and
to eat
likes
* Answers may vary.
Think about it (p. 14)
He might be a detective, policeman, or professor.
* Answers may vary.
Comprehension (pp. 16-17)
A. clues, mysteries
B. 1. F 2. F 3. T
C. 1. ⓑ 2. ⓐ, ⓑ 3. ⓒ
D. guess, English, criminals, hat, Sherlock
Link to Write (p. 17)
Guess Who?
• Rules: Try to guess who this person is.
Don’t search the Internet to find
the answer.
• Clues: 1. He is not a real person.
2. He saves many people from danger.
3. He uses supernatural power.
4. He wears blue pants and a red cape.
• Answer: Superman
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 03
Let’s Eat Local!
Key Words (p. 19)
A. 1. temperature
2. transport
3. distance
4. atmosphere
5. fuel
6. ocean
B. 1. distance
2. ocean
3. fuels
4. temperature
5. atmosphere
6. transport
While you read (p. 21)
Imported food uses the most fuel.
Comprehension (pp. 22-23)
A. ⓒ
B. 1. T 2. F 3. T
C. 1. ⓑ 2. ⓒ 3. ⓐ, ⓑ
D. distance, fuel, heat, warming
Link to Write (p. 23)
What Food Used the Most Fuel?
What foods do you usually eat, and where
do they come from? Look in your refrigerator.
Then fill in the chart below.
Local Foods
milk
apples
pork
Imported Foods (Country)
butter (Australia)
mushrooms (China)
oranges (the US)
Among those foods, oranges used the
most fuel because it travels a long distance
from the US.
* Answers may vary.
Unit 04
How Many out of a Hundred?
Key Words (p. 25)
A. 1. count
2. pie chart
3. formula
4. survey
5. graph
6. school lunch
B. 1. graph
2. survey
3. school lunches
4. count
5. formula
6. pie chart
Think about it (p. 26)
Yes, I like it very much because it has various
delicious food.
* Answers may vary.
Comprehension (pp. 28-29)
A. school lunches, like
B. 1. T 2. F 3. T
C. 1. ⓒ 2. ⓐ 3. ⓑ
D. survey, lunch, results, percentages
Link to Write (p. 29)
How Is Your School Uniform?
I want to know your opinion. Please check
below.
1. I like its design.
2. I like its color.
3. Its price is good.
* Answers may vary.
- Thanks for your participation. –
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 05
I’m out of Control!
Key Words (p. 33)
A. 1. concentrate
2. reward
3. timer
4. self-control
5. stay up
6. delete
B. 1. timer
2. self-control
3. stayed up
4. delete
5. reward
6. concentrate
Unit 06
Round or Flat?
Key Words (p. 39)
A. 1. half
2. stretch
3. sphere
4. map
5. globe
6. shrink
B. 1. shrink
2. sphere
3. stretch
4. half
5. globe
6. map
Think about it (p. 34)
I would tell him that he should delete the game
from his computer and phone right away.
* Answers may vary.
Comprehension (pp. 36-77)
A. stop, fix
B. 1. F 2. F 3. T
C. 1. ⓐ 2. ⓒ 3. ⓑ
D. concentrate, completely, 10(ten), reward,
start
Link to Write (p. 37)
Dear Agatha,
I′m having a problem with self-control. I
can′t stop eating sweets after meals.
Should I completely stop eating them at
once?
Help me,
Sweets’ Lover
* Answers may vary.
While you read (p. 40)
We cut globes into two equal halves, and the
shortest distance is on the line the cut makes.
Comprehension (pp. 42-43)
A. 1. ⓒ
B. 1. T 2. T 3. F
C. 1. ⓑ, ⓒ 2. ⓑ 3. ⓐ
D. Globes: melon, circle, halves, real
Maps: shortest, stretch
Link to Write (p. 43)
Globes or Maps?
In my opinion, maps have more
advantages than globes. For example, they
are easy to carry with. They also have some
disadvantages like they do not show the
exact locations. However, I think they are
still better than globes.
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 07
Athens: Birthplace of
Democracy
Key Words (p. 45)
A. 1. law
2. population
3. dispute
4. vote
5. property
6. equal
B. 1. Property
2. population
3. vote
4. laws
5. equal
6. dispute
Unit 08
The Great Train Adventure
Key Words (p. 51)
A. 1.view
2. backpacking
3. luxurious
4. dining
5. landscape
6. railway
B. 1. view
2. railway
3. luxurious
4. dining
5. landscapes
6. backpacking
While you read (p. 46)
A direct democracy is the government in which
each citizen voted on the laws.
Comprehension (pp. 48-49)
A. democracy, different
B. 1. T 2. F 3. T
C. 1. ⓐ 2. ⓑ 3. ⓑ
D. laws, land, foreigners, power
Link to Write (p. 49)
Government System in My Country
The government system of my country is
different from ancient Athens’. First, we have a
direct democracy in which the citizens
have equal votes.
Citizens are equal in terms of gender,
property, and religion.
They vote for choosing law makers or
the president.
* Answers may vary.
Think about it (p. 52)
The train has luxurious rooms and dining places,
so it is just like staying in a hotel while you’re
traveling.
* Answers may vary.
Comprehension (pp. 54-55)
A. 1. ⓒ
B. 1. F 2. T 3. T
C. 1. ⓑ 2. ⓐ, ⓑ 3. ⓒ
D. historic, country, magical, end, planes
Link to Write (p. 55)
My Travel Plan
• Period: 7 days 8 nights
• Transportation: Train & Bus
• Route: from Beijing to Shanghai
• Routes or attractions:
1. The Forbidden City
2. Summer Palace
3. the Great Wall of China
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 09
As the World Turns
Key Words (p. 59)
A. 1. top
2. space
3. spin
4. rise
5. set
6. flashlight
B. 1. rises
2. top
3. flashlight
4. set
5. space
6. spins
While you read (p. 60)
It takes 24 hours.
Comprehension (pp. 62-63)
A. night, spins
B. 1. F 2. T 3. F
C. 1. ⓐ, ⓑ 2. ⓑ 3. ⓒ
D. 24, light, shadow, night
Link to Write (p. 63)
Day and Night Date: 2016 / 09 / 20
The sun rises at 6:30 am today.
It becomes bright, and I get up at 7:00 am.
Daytime starts. It will last 12 hours.
At night, the sun sets at 7:20 pm today.
It becomes dark, and I go to bed at 10:00
pm. Night starts. It will last another 12 hours.
* Answers may vary.
Unit 10
Keep Your Enemies Closer
Key Words (p. 65)
A. 1. skin
2. peck
3. cut
4. swallow
5. itch
6. worm
B. 1. peck
2. Worms
3. skin
4. itches
5. swallow
6. cut
Think about it (p. 67)
I think Crocodile benefits more because he ate
the plover whole.
* Answers may vary.
Comprehension (pp. 68-69)
A. ⓑ
B. 1. F 2. T 3. T
C. 1. ⓒ 2. ⓑ 3. ⓐ
D. Hippo and the oxpeckers: worms, cuts,
oxpeckers
Crocodile and a plover: teeth, shut
Link to Write (p. 69)
They Help Each Other
Some animals help each other to live
together. They benefit equally. It is called
“symbiosis.”
Ants and aphids are a good example.
In their relationship, ants protect aphids
from predators, and aphids provide ants
with food.
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 11
CO2 : The One-Way Gas
Key Words (p. 71)
A. 1. stick
2. ultraviolet light
3. atom
4. molecule
5. gas
6. greenhouse
B. 1. gas
2. greenhouse
3. stick
4. ultraviolet light
5. molecule
6. atom
While you read (p. 72)
Infrared rays have the longest.
Comprehension (pp. 74-75)
A. ⓒ
B. 1. F 2. F 3. T
C. 1. ⓐ 2. ⓒ 3. ⓑ
D. light, UV(Ultraviolet), infrared, inside
Link to Write (p. 75)
How to Reduce CO2
The greenhouse effect causes many
problems in our environment. So we have to
reduce CO2. To do so, …
1. We can plant many trees in mountains.
2. We can mainly eat local food.
3. We can use public transit.
* Answers may vary.
Unit 12
Now I See the Stars!
Key Words (p. 77)
A. 1. doorknob
2. germs
3. telescope
4. scattered
5. lens
6. microscope
B. 1. doorknob
2. telescope
3. microscope
4. lens
5. Germs
6. scattered
Think about it (p. 79)
I would like to see Mars and Venus with a
telescope.
* Answers may vary.
Comprehension (pp. 80-81)
A. telescope, lenses
B. 1. T 2. F 3. F
C. 1. ⓐ, ⓑ 2. ⓑ 3. ⓒ
D. Telescopes: bigger, far away, moon(stars)
Microscopes: tiny, germs
Link to Write (p. 81)
Lenses Are around Us!
There are many tools that have lenses. We
use them for different purposes.
• Magnifying glass: We use it to see small
things.
• Camera: We use it to take pictures.
• Sunglasses: We use them to avoid
sunlight.
• Binoculars: We use them to see things
that are a long distance away.
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 13
Uncovering and Saving the
Past
Key Words (p. 85)
A. 1. remove
2. artworks
3. varnish
4. repair
5. art restorer
6. fade
Unit 14
The Painted Village
Key Words (p. 91)
A. 1. shine
2. dome
3. village
4. earthquake
5. cliff
6. reflect
B. 1. faded
2. repairs
3. Varnish
4. remove
5. artworks
6. art restorer
B. 1. shines
2. reflect
3. earthquake
4. village
5. cliff
6. dome
While you read (p. 86)
They clean, repair, and protect old artworks.
Comprehension (pp. 88-89)
A. ⓐ
B. 1. T 2. F 3. F
C. 1. ⓑ 2. ⓒ 3. ⓐ, ⓒ
D. time, badly, old, damage, change,
generations
Link to Write (p. 89)
Art Jobs
There are many different jobs related to
art. Among them, I’d like to introduce you to
the curators. This person’s main jobs are to
collect artworks for a gallery and provide
the audience with good explanations
about them. These
important
because many people do not know about
art.
jobs are
Think about it (p. 93)
Narrow alleys between houses and stone steps
are also pretty. And the sunset makes the village
the most beautiful place in the world.
* Answers may vary.
Comprehension (pp. 94-95)
A. white, island
B. 1. T 2. F 3. F
C. 1. ⓐ, ⓑ 2. ⓒ 3. ⓐ
D. light, walls, heat, Short
Link to Write (p. 95)
The Most Beautiful Building
The most beautiful building I know is the
Taj Mahal. It is located in Agra, India. It is
beautiful because its walls and poles are
decorated with elaborate designs and
jewels.
* Answers may vary.
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Student Book 4
Answer Key
Unit 15
William Tell, the Opera
Key Words (p. 97)
A. 1. storm
2. thunder
3. march
4. dawn
5. hero
6. orchestra
B. 1. Thunder
2. Storms
3. heroes
4. Dawn
5. orchestra
6. march
Unit 16
Coastal Safety
Key Words (p. 103)
A. 1. hurricane
2. flooding
3. pantry
4. beams
5. generator
6. firefighter
B. 1. beams
2. flooding
3. Firefighters
4. generator
5. hurricane
6. pantry
While you read (p. 98)
It is the musical introduction of an opera.
Comprehension (pp. 100-101)
A. ⓒ
B. 1. T 2. F 3. F
C. 1. ⓑ 2. ⓐ 3. ⓒ
D. cello, rages, over, flute, calm, trumpets, win
Link to Write (p. 101)
Title: Moonlight
I like to listen to Moonlight. It was written
by Ludwig van Beethoven. It is played by a
piano.
this music because the
beautiful melody makes me calm and
pleasant.
like
I
* Answers may vary.
Think about it (p. 105)
I need some batteries and a flashlight. Or
candles might be useful in case the power goes
out.
* Answers may vary.
Comprehension (pp. 106-107)
A. ⓑ
B. 1. F 2. T 3. F
C. 1. ⓐ 2. ⓑ 3. ⓑ, ⓒ
D. Outside: flooding, shutters, winds
Inside: generator, pantry
Link to Write (p. 107)
How to Prepare for an Earthquake
An earthquake occurs every year in this
area. I have some tips to prepare for it.
1. Go under desk or table when you’re
inside.
2. Quickly run to an open place when
you’re outside.
3. Don’t use elevators.
If you’re prepared, you can reduce the
damage.
* Answers may vary.
My Best Reading_SB4_Answer Key
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My Best Reading
Workbook 4
Answer Key
Unit 01
There’s a Pig in the House!
Word Practice (p. 04)
A. 1. trick 2. treat 3. tear up
4. cage 5. rodents 6. pet
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓐ
Sentence Practice (p. 05)
1. You have to take care of a pet guinea pig
properly.
2. They need that to feel safe.
3. Give them a treat each time.
4. You can even teach them tricks!
Summary (p. 05)
① rodents ② properly ③ cage
④ treat ⑤ tricks
Unit 02
Can You Guess My Name?
Word Practice (p. 06)
A. 1. peek 2. guess 3. pipe
4. cartoon 5. backwards 6. criminal
B. 1. ⓐ 2. ⓑ 3. ⓐ 4. ⓑ
Sentence Practice (p. 07)
1. You try to guess who I am.
2. I have appeared in lots of cartoons.
3. I have a very good memory.
4. I find clues and solve mysteries.
Summary (p. 07)
① guess ② cartoons ③ memory
④ criminals ⑤ pipe
Unit 03
Let’s Eat Local!
Word Practice (p. 08)
A. 1. atmosphere 2. temperature 3. ocean
4. distance 5. transport 6. fuel
B. 1. ⓑ 2. ⓑ 3. ⓐ 4. ⓐ
Sentence Practice (p. 09)
1. It came from a farm or the ocean.
2. It’s all about the distance your food travels.
3. Transporting food burns fuel.
4. Burning fuel adds CO2 to the atmosphere.
Summary (p. 09)
① distance ② fuel ③ atmosphere
④ temperature ⑤ local
Unit 04
How Many out of a Hundred?
Word Practice (p. 10)
A. 1. pie chart 2. school lunch 3. formula
4. count 5. graph 6. survey
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓐ
Sentence Practice (p. 11)
1. Make a percentage graph with the results.
2. They passed out survey sheets in the lunch
line.
3. In math class, they counted the results.
4. By percentage, most kids like them.
Summary (p. 11)
① assignment ② passed ③ collected
④ counted ⑤ pie
My Best Reading_WB4_Answer Key
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My Best Reading
Workbook 4
Answer Key
Unit 05
I’m out of Control!
Word Practice (p. 12)
A. 1. timer 2. delete 3. self-control
4. stay up 5. concentrate 6. reward
B. 1. ⓐ 2. ⓑ 3. ⓐ 4. ⓑ
Sentence Practice (p. 13)
1. Should I delete it from my computer?
2. You’re having a problem with self-control.
3. It’s like cheese and crackers.
4. Play for ten minutes as a reward.
Summary (p. 13)
① concentrate ② self-control ③ fix
④ reward ⑤ timer
Unit 06
Round or Flat?
Word Practice (p. 14)
A. 1. sphere 2. half 3. stretch
4. globe 5. shrink 6. map
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓐ
Sentence Practice (p. 15)
1. You know the Earth is a sphere.
2. That’s why we have globes.
3. Imagine you cut globes into two equal halves.
4. Some things stretch, and others shrink.
Summary (p. 15)
① sphere ② routes ③ Maps
④ rectangle ⑤ shrink
Unit 07
Athens: Birthplace of
Democracy
Word Practice (p. 16)
A. 1. law 2. equal 3. property
4. vote 5. dispute 6. population
B. 1. ⓑ 2. ⓐ 3. ⓐ 4. ⓑ
Sentence Practice (p. 17)
1. The citizens have equal votes.
2. Each citizen voted on the laws.
3. Men without property were left out.
4. The courts settled disputes.
Summary (p. 17)
① democracy ② citizen ③ laws
④ property ⑤ equal
Unit 08
The Great Train Adventure
Word Practice (p. 18)
A. 1. dining 2. view 3. luxurious
4. landscape 5. railway 6. backpacking
B. 1. ⓐ 2. ⓑ 3. ⓐ 4. ⓐ
Sentence Practice (p. 19)
1. Enjoy world-class dining.
2. View beautiful landscapes unfolding every
minute.
3. You’ll be pleased by what unfolds outside
your window.
4. We have tour options to meet your needs.
Summary (p. 19)
① railway ② dining ③ landscapes
④ historic ⑤ pleased
My Best Reading_WB4_Answer Key
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My Best Reading
Workbook 4
Answer Key
Unit 09
As the World Turns
Word Practice (p. 20)
A. 1. rise 2. top 3. space
4. spin 5. set 6. flashlight
B. 1. ⓑ 2. ⓐ 3. ⓐ
Sentence Practice (p. 21)
1. The sun rises in the east.
2. That’s why we have day and night.
3. You may know the Earth spins like a top.
4. Imagine the sun as a flashlight.
Summary (p. 21)
① top ② spin ③ light
④ flashlight ⑤ night
Unit 10
Keep Your Enemies Closer
Word Practice (p. 22)
A. 1. worm 2. cut 3. swallow
4. peck 5. skin 6. itch
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓐ
Sentence Practice (p. 23)
1. Oxpeckers were pecking into the skin.
2. I hate the worms inside my skin.
3. They peck the worms but leave cuts on me.
4. Crocodile swallowed the bird whole.
Summary (p. 23)
① itch ② peck ③ cuts
④ benefit ⑤ swallow
Unit 11
CO2: The One -Way Gas
Word Practice (p. 24)
A. 1. gas 2. molecule 3. stick
4. ultraviolet light 5. greenhouse
6. atom
B. 1. ⓐ 2. ⓐ 3. ⓑ 4. ⓑ
Sentence Practice (p. 25)
1. The Earth’s air is made of many gases.
2. CO2 is called a greenhouse gas.
3. Ultraviolet light has the shortest waves.
4. Molecules are atoms that are stuck together.
Summary (p. 25)
① Ultraviolet ② molecules ③ heats
④ infrared ⑤ greenhouse
Unit 12
Now I See the Stars!
Word Practice (p. 26)
A. 1. scattered 2. lens 3. microscope
4. doorknob 5. germs 6. telescope
B. 1. ⓐ 2. ⓑ 3. ⓑ 4. ⓐ
Sentence Practice (p. 27)
1. It has two kinds of lenses.
2. The big lens gathers scattered light.
3. Telescopes help us see big things that are far
away.
4. You’ll need a microscope for that.
Summary (p. 27)
① lenses ② scattered ③ microscope
④ Telescopes ⑤ close
My Best Reading_WB4_Answer Key
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My Best Reading
Workbook 4
Answer Key
Unit 13
Uncovering and Saving the
Past
Word Practice (p. 28)
A. 1. repair 2. fade 3. artworks
Unit 15
William Tell, the Opera
Word Practice (p. 32)
A. 1. dawn 2. march 3. hero
4. storm 5. thunder 6. orchestra
4. art restorer 5. varnish 6. remove
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓑ
Sentence Practice (p. 29)
1. You don’t think much about art restorers.
2. They repair and protect old artworks.
3. In classical painting, varnish is the last step.
4. It also keeps the colors from fading.
Summary (p. 29)
① repair ② restorers ③ varnish
④ remove ⑤ generations
Unit 14
The Painted Village
Word Practice (p. 30)
A. 1. shine 2. village 3. reflect
4. dome 5. cliff 6. earthquake
B. 1. ⓐ 2. ⓑ 3. ⓐ 4. ⓐ
Sentence Practice (p. 31)
1. The older brother, Nick loves his village.
2. Nick looked down the cliffs toward the water.
3. The white buildings with blue domes shone in
the sun.
4. Because we sometimes have earthquakes.
Summary (p. 31)
① domes ② climate ③ reflect
④ heat ⑤ earthquakes
B. 1. ⓑ 2. ⓐ 3. ⓑ 4. ⓐ
Sentence Practice (p. 33)
1. This tells the story of a Swiss hero.
2. The first part is slow, peaceful cello music.
3. The full orchestra plays this part.
4. Swiss villagers enjoy the calm after the storm.
Summary (p. 33)
① hero ② Dawn ③ Storm
④ orchestra ⑤ March
Unit 16
Coastal Safety
Word Practice (p. 34)
A. 1. pantry 2. beams 3. generator
4. firefighter 5. hurricane 6. flooding
B. 1. ⓑ 2. ⓑ 3. ⓐ 4. ⓑ
Sentence Practice (p. 35)
1. A firefighter in full gear came into the
classroom.
2. The house was raised high on beams.
3. Hurricane sometimes causes flooding.
4. Ms. Morales turned on the generator.
Summary (p. 35)
① beams ② flooding ③ generator
④ pantry ⑤ emergency
My Best Reading_WB4_Answer Key
12
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