My Best Reading
Student Book 1
Answer key
Unit 01
Whoops ... an Invention!
Key Words (p. 07)
B. 1. light bulb
2. invention
3. scientist
4. microwave oven
5. melt
6. radio wave
While you read (p. 08)
Edison invented the first good light bulb.
Comprehension (pp. 10-11)
A. ⓑ
B. 1. hard work
2. large
3. finding
C. 1. ⓑ 2. ⓒ 3. ⓐ, ⓒ
D. microwave oven, candy bar, cook food
Link to Write (p. 11)
My Great Invention
I want to introduce my great invention. It is a
hat with a pinwheel on it. I came up with a
good idea when I spun a pinwheel on a
shiny day. It was an accident!
* Answers may vary.
Unit 02
The Very Special
Jack-o-Lantern
Key Words (p. 13)
B. 1. bumpy
2. festival
3. cornfield
4. maze
5. puzzle
6. jack-o-lantern
Think about it (p. 14)
An event where you can make jack-o-lanterns,
food stands, etc. are at the pumpkin festival.
* Answers may vary.
Comprehension (pp. 16-17)
A. pumpkin festival, jack-o-lantern
B. 1. jack-o-lanterns
2. plastic
3. popular
C. 1. ⓒ 2. ⓐ 3. ⓒ
D. Last year: jack-o-lantern, special
This year: taller, Halloween
Link to Write (p. 17)
The Pomona Pumpkin Festival
Please come and enjoy the festival with us!
• When: November 6 - November 31
• Where: Pomona Ave.
• Interesting Events:
1. the Halloween Parade
2. the Giant Pumpkin Contest
3. the Haunted House
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 03
Make Your Own Dirt
Key Words (p. 19)
B. 1. spray
2. shade
3. Earthworms
4. dirt
5. feed
6. rectangle
Unit 04
A UFO? An IFO!
Key Words (p. 25)
B. 1. measure
2. square
3. cube
4. UFO
5. equal
6. edges
While you read (p. 20)
I need a plastic bin, earthworms, garden dirt,
newspaper, water, etc.
* Answers may vary.
Comprehension (pp. 22-23)
A. ⓐ
B. 1. rectangles
2. fishing
3. water
C. 1. ⓐ 2. ⓐ, ⓒ 3. ⓑ
D. earthworms, newspaper, food garbage
Link to Write (p. 23)
Reduce Food Garbage!
We make a lot of food garbage every day. It’s
not good for the environment. To reduce food
garbage, I’ll do the things below.
1. I’ll finish all the food on my plate.
2. I’ll grow dirt using earthworms and food
garbage.
Think about it (p. 26)
I think UFOs really exist, and they are circles.
* Answers may vary.
Comprehension (pp. 28-29)
A. UFO, sky lantern
B. 1. outside
2. cube
3. square
C. 1. ⓑ 2. ⓒ 3. ⓐ
D. Square: four, width
Cube: six, height
Link to Write (p. 29)
Shapes around Us
We live with many shapes. Look around your
house and find some!
Rectangle
TV screen
table
picture frame
Circle
plate
clock
stool
Cube
dice
box
ice cube
3. I’ll buy only the foods on my shopping
list.
* Answers may vary.
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 05
Who Would Get Up First?
Key Words (p. 33)
B. 1. dizzy
2. sweat
3. interview
4. throw up
5. passenger
6. flash
Think about it (p. 34)
I would give up my seat to the old woman.
* Answers may vary.
Comprehension (pp. 36-77)
A. ⓑ
B. 1. sick
2. An old woman
3. his head
C. 1. ⓐ 2. ⓒ 3. ⓒ
D. sitting passengers, got up, cameras, famous
Link to Write (p. 37)
My Experience
I was in the same situation as Brian was. I
was sitting on the bus. I was sick with a cold.
But there was a woman with a baby by me. I
gave up the seat for her.
* Answers may vary.
Unit 06
Nauru
Key Words (p. 39)
B. 1. dig
2. native
3. island
4. mine
5. wildlife
6. rocks
While you read (p. 41)
The rocks ran out, and they have little business
today.
Comprehension (pp. 42-43)
A. rocks, environment
B. 1. Australia
2. Powerful countries
3. rich
C. 1. ⓑ 2. ⓐ 3. ⓒ
D. Past: fish, rocks
Now: help, danger
Link to Write (p. 43)
Dear Nauruans,
Hi, I’m Mika from India. I’m sorry to hear
about your troubled history. It taught me we
should save our natural resources. I wish
you the best in the future.
Best,
Mika
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 07
Ook and Aak
Key Words (p. 45)
B. 1. axe
2. hunt
3. blade
4. hut
5. tent
6. spear
Think about it (p. 47)
I think Ook’s life is more interesting because he
moves a lot for hunting.
* Answers may vary.
Comprehension (pp. 48-49)
A. ⓑ
B. 1. place
2. axe
3. hunts
C. 1. ⓑ 2. ⓑ, ⓒ 3. ⓐ
D. Ook’s: Old, tip, tent
Aak’s: New, blade, food
Link to Write (p. 49)
My Life vs. Aak’s
Unit 08
The DMZ: An Untouched
Nature Reserve
Key Words (p. 51)
B. 1.center
2. forest
3. protect
4. Stay out
5. border
6. agreement
While you read (p. 52)
It began in 1953.
Comprehension (pp. 54-55)
A. wildlife, protect
B. 1. between
2. border
3. developed
C. 1. ⓐ 2. ⓒ 3. ⓐ
D. Background: strip, stay out
The wildlife: safe, untouched, wildlife
Link to Write (p. 55)
Protect It or Not?
My life is different from Aak’s. He makes
everything with stone. But I buy things at
stores. And he lives in his mud hut. But I
live in the apartment building.
* Answers may vary.
The two Koreas will become one country
again. Then we can go to the DMZ. I think we
can develop the DMZ.
My reasons are below.
1. It can be a natural park for animals and
people.
2. It can be an educational place about our
history.
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 09
A Bird’s-Eye View
Key Words (p. 59)
B. 1. pilot
2. hot-air balloon
3. freeze
4. scream
5. fill
6. float
Think about it (p. 61)
It might go down when the air inside becomes
colder.
* Answers may vary.
Comprehension (pp. 62-63)
A. ⓐ
B. 1. white rock
2. scared
3. The pilot
C. 1. ⓒ 2. ⓑ, ⓒ 3. ⓐ
D. hot air, lighter, beautiful
Link to Write (p. 63)
How Amazing!
Unit 10
The Longest Voyage
Key Words (p. 65)
B. 1. record
2. solar system
3. orbit
4. launch
5. aliens
6. space probe
While you read (p. 67)
It is going to the Oort cloud.
Comprehension (pp. 68-69)
A. probe, golden record
B. 1. Jupiter’s rings
2. 1990
3. ice
C. 1. ⓑ 2. ⓒ 3. ⓐ, ⓒ
D. launched, Jupiter, solar system
Link to Write (p. 69)
Dear Aliens,
Hi, there! I’m Nick from Earth. I have some
things to show you. Here are pictures of my
dogs and cats. Also, here are some sounds of
my favorite classical music. I hope I will see
you someday.
From Earth
Last summer, I went to Hawaii with my
family. We visited many places and had fun.
But Waikiki was most impressive. We surfed
and snorkeled in the water there.
It was wonderful!
* Answers may vary.
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 11
A Look Underground
Key Words (p. 71)
B. 1. spread
2. desert
3. pull out
4. sapling
5. root
6. compete
Unit 12
Sweet Science
Key Words (p. 77)
B. 1. solid
2. thirsty
3. stir
4. Pour
5. liquid
6. experiment
While you read (p. 73)
Roots are important for desert plants because
they get lots of water from the dirt and store it.
Comprehension (pp. 74-75)
A. ⓒ
B. 1. dirt
2. food
3. deserts
C. 1. ⓑ 2. ⓑ, ⓒ 3. ⓐ
D. Keeping plants steady: underground, steady,
pull
Gathering food and water: store, saplings
Link to Write (p. 75)
We Eat Parts of Plants!
Some vegetables we eat are the roots of
plants. They include potatoes, carrots, radishes,
and others. I like to eat them!
Some are the fruits of plants. They include
tomatoes, eggplants, cucumbers, and
others. I also like them very much!
* Answers may vary.
Think about it (p. 78)
I think he is not really thirsty. He is making
lemon soda to get Juan interested.
* Answers may vary.
Comprehension (pp. 80-81)
A. science, soda
B. 1. boring
2. juice
3. sugar
C. 1. ⓒ 2. ⓐ 3. ⓐ, ⓑ
D. skip, thirsty, measure, project
Link to Write (p. 81)
Science Fair Project
• Topic: why oil floats on water
• What to do: an experiment
• What I need: water, oil, a glass, and a
scale
• Result: One cup of oil is lighter than the
same amount of water.
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 13
A Different Museum Tour
Key Words (p. 85)
B. 1. whisper
2. focus
3. wave
4. missing
5. tour
6. confused
Think about it (p. 87)
I feel the woman looks so sad.
* Answers may vary.
Comprehension (pp. 88-89)
A. ⓑ
B. 1. art
2. children
3. The guide
C. 1. ⓒ 2. ⓐ 3. ⓒ
D. First: children’s, fun, sighed
Later: weird, secrets
Link to Write (p. 89)
Unit 14
The Sound of Strings
Key Words (p. 91)
B. 1. hold up
2. stool
3. string
4. note
5. similar
6. bow
While you read (p. 93)
The violin is the smallest, and the double bass is
the biggest.
Comprehension (pp. 94-95)
A. similar, different
B. 1. bigger
2. on the floor
3. tall
C. 1. ⓒ 2. ⓑ 3. ⓒ
D. Cello, big, Strings, low
Link to Write (p. 95)
My Favorite Instrument
My favorite painter is Pablo Picasso. He
mostly painted poor people in Paris. Among
his paintings, I like The Dream the most.
* Answers may vary.
My favorite instrument is the plute. It is
made of metal and has buttons. When you
play it, you use your fingers. It makes
beautiful sounds.
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Student Book 1
Answer key
Unit 15
Let’s Stay in Shape!
Key Words (p. 97)
B. 1. exercise
2. stretch
3. indoors
4. bounce
5. muscles
6. Rock climbing
Unit 16
Animalympics
Key Words (p. 103)
B. 1. athlete
2. fan
3. dash
4. winner
5. high jump
6. lead
While you read (p. 99)
Both are more fun than others, and you can
enjoy them indoors.
Comprehension (pp. 100-101)
A. ⓐ
B. 1. biggest
2. strengthens
3. dangerous
C. 1. ⓐ, ⓑ 2. ⓒ 3. ⓐ
D. Ball exercise: bounce, legs
Link to Write (p. 101)
To Stay in Shape
Indoor rock climbing: helmet, pads
I do swimming every day. It is good for my
lungs and muscles. Also, I sometimes do
jumping rope. It strengthens my legs.
These activities help me stay in shape.
* Answers may vary.
Think about it (p. 104)
I think Leopard is likely win the high jump.
* Answers may vary.
Comprehension (pp. 106-107)
A. fastest, jumper, Cheetah
B. 1. Impala
2. same
3. 4 m
C. 1. ⓑ, ⓒ 2. ⓐ 3. ⓒ
D. 100-meter dash: record, caught
High jump: rookies, beat
Link to Write (p. 107)
School Sports Day
I entered the long jump. Laura and I were
the favorites. My record was 1.6 meters. But
hers was 1.55 meters. I won!
* Answers may vary.
My Best Reading_SB1_Answer key
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My Best Reading
Workbook 1
Answer key
Unit 01
Whoops ... an Invention!
Word Practice (p. 04)
A. 1. ⓑ 2. ⓐ 3. ⓐ
4. ⓑ 5. ⓐ 6. ⓐ
B. 1. tiny
2. far away
3. accident
Sentence Practice (p. 05)
1. He only made the first good one.
2. The light bulb took about 70 years!
3. Some inventions come from accidents.
4. It popped very quickly!
Summary (p. 05)
① inventions ② accidents ③ tested
④ radio waves ⑤ microwave oven
Unit 02
The Very Special
Jack-o-Lantern
Word Practice (p. 06)
A. 1. ⓐ 2. ⓑ 3. ⓑ
4. ⓐ 5. ⓑ 6. ⓐ
B. 1. promise
2. normal
3. smooth
4. popular
Sentence Practice (p. 07)
1. They visited the Pomona Pumpkin Festival.
2. We’ll get a special one next year.
3. One was even taller than Holly!
4. The big pumpkin was there with hers.
Summary (p. 07)
① Halloween ② jack-o-lantern ③ promised
④ normal ⑤ same
Unit 03
Make Your Own Dirt
Word Practice (p. 08)
A. 1. ⓐ 2. ⓑ 3. ⓐ
4. ⓑ 5. ⓐ 6. ⓐ
B. 1. peel
2. grounds
3. tear up
4. scraps
Sentence Practice (p. 09)
1. People grow plants inside.
2. Put the earthworms in the bin.
3. You can feed them food garbage!
4. It’s time to feed your worms.
Summary (p. 09)
① dirt ② Rectangles ③ earthworms
④ shade ⑤ leave
Unit 04
A UFO? AN IFO!
Word Practice (p. 10)
A. 1. ⓑ 2. ⓐ 3. ⓑ
4. ⓐ 5. ⓐ 6. ⓑ
B. 1. width
2. height
3. glowing
4. length
Sentence Practice (p. 11)
1. It’s a big, glowing square!
2. There’s a UFO heading right for us.
3. Cubes have six square sides.
4. We measure a square two ways.
Summary (p. 11)
① glowing ② Squares ③ equal
④ measure ⑤ height
My Best Reading_WB1_Answer key
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My Best Reading
Workbook 1
Answer key
Unit 05
Who Would Get Up First?
Word Practice (p. 12)
A. 1. ⓐ 2. ⓑ 3. ⓐ
4. ⓑ 5. ⓐ 6. ⓑ
B. 1. voice
2. decision
3. pretend
4. hidden
Sentence Practice (p. 13)
1. He was dizzy and wanted to throw up.
2. An old woman walked by the sitting passengers.
3. Pretend you’re asleep!
4. He gave up his seat to the old woman.
Summary (p. 13)
① seat ② passengers ③ Pretend
④ right ⑤ famous
Unit 06 Nauru
Word Practice (p. 14)
A. 1. ⓑ 2. ⓐ 3. ⓐ
4. ⓑ 5. ⓐ 6. ⓑ
B. 1. control
2. valuable
3. run out
4. environment
Sentence Practice (p. 15)
1. Nauru is an island near Australia.
2. It is a tiny country with a troubled history.
3. They dug mines everywhere on the island.
4. The mining hurt plants and wildlife.
Summary (p. 15)
① history ② natives ③ valuable
Unit 07
Ook and Aak
Word Practice (p. 16)
A. 1. ⓐ 2. ⓐ 3. ⓑ
4. ⓑ 5. ⓐ 6. ⓑ
B. 1. tip
2. grab
3. difference
Sentence Practice (p. 17)
1. Aak lives in the New Stone Age.
2. Ook grabs a spear with a stone tip.
3. He always stays in his mud hut.
4. He gets vegetables from his garden.
Summary (p. 17)
① Stone Age ② spear ③ axe
④ tent ⑤ hut
Unit 08
The DMZ: An Untouched Nature
Reserve
Word Practice (p. 18)
A. 1. ⓑ 2. ⓐ 3. ⓑ
4. ⓐ 5. ⓑ 6. ⓐ
B. 1. strip
2. kind
3. untouched
4. rare
Sentence Practice (p. 19)
1. South and North Korea have an agreement.
2. The DMZ is home to many rare animals and
plants.
3. The DMZ also has natural, untouched forests.
4. Some also worry about the wildlife in the
DMZ.
Summary (p. 19)
① strip ② stay out ③ safe
④ ran out ⑤ help
④ untouched ⑤ protect
My Best Reading_WB1_Answer key
10
My Best Reading
Workbook 1
Answer key
Unit 09 A Bird’s-Eye View
Word Practice (p. 20)
A. 1. ⓐ 2. ⓑ 3. ⓐ
Unit 11 A Look Underground
Word Practice (p. 24)
A. 1. ⓐ 2. ⓑ 3. ⓑ
4. ⓑ 5. ⓐ 6. ⓐ
B. 1. space
2. explain
3. continue
4. bird’s-eye view
4. ⓐ 5. ⓑ 6. ⓐ
B. 1. share
2. store
3. underground
4. steady
Sentence Practice (p. 21)
1. Don’t be scared!
2. Maria stepped inside carefully.
3. The balloon’s hot air floats above the cold air.
4. We’re heavier than air!
Summary (p. 21)
① trip ② lighter ③ sky
④ floats ⑤ bird's-eye
Unit 10 The Longest Voyage
Word Practice (p. 22)
A. 1. ⓑ 2. ⓐ 3. ⓑ
Sentence Practice (p. 25)
1. We don’t think much about plant roots.
2. Roots hold steady in the dirt.
3. Do plants really eat food?
4. Most plants compete for food and water.
Summary (p. 25)
① steady ② spread ③ pull, out
④ store ⑤ saplings
Unit 12 Sweet Science
Word Practice (p. 26)
A. 1. ⓐ 2. ⓐ 3. ⓑ
4. ⓑ 5. ⓐ 6. ⓑ
4. ⓐ 5. ⓐ 6. ⓑ
B. 1. dust
2. landmark
3. discover
4. speed
Sentence Practice (p. 23)
1. A lonely machine speeds through space.
2. It gathered important data in both places.
3. Voyager 1 left our solar system in 1990.
4. Will aliens find the record someday?
Summary (p. 23)
① launched ② discovered ③ solar system
④ record ⑤ aliens
B. 1. due
2. project
3. bottom
4. moment
Sentence Practice (p. 27)
1. He pours the juice and stirs in sugar.
2. Juan points to the bottom of the glass.
3. That solid sugar will never become liquid.
4. Let’s do an experiment.
Summary (p. 27)
① due ② skip ③ pours
④ sugar ⑤ experiment
My Best Reading_WB1_Answer key
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My Best Reading
Workbook 1
Answer key
Unit 13 A Different Museum
Tour
Word Practice (p. 28)
A. 1. ⓑ 2. ⓐ 3. ⓑ
Unit 15 Let’s Stay in Shape!
Word Practice (p. 32)
A. 1. ⓐ 2. ⓑ 3. ⓐ
4. ⓐ 5. ⓐ 6. ⓑ
B. 1. trick
2. weird
3. secret
4. stuff
Sentence Practice (p. 29)
1. Laura and Mom arrived at the Musée d’Orsay.
2. Degas didn’t need any legs!
3. The kids looked confused.
4. Who wants to find more secrets?
Summary (p. 29)
① fun ② weird ③ people
④ missing ⑤ secrets
Unit 14
The Sound of Strings
Word Practice (p. 30)
A. 1. ⓐ 2. ⓑ 3. ⓑ
4. ⓐ 5. ⓑ 6. ⓐ
B. 1. quartet
2. rest on
3. classical
Sentence Practice (p. 31)
1. They are different in size and sound.
2. Violinists can play it under the chin.
3. Short strings can reach high notes.
4. They are too big to hold up.
Summary (p. 31)
① string ② bow ③ notes
④ longer ⑤ reach
4. ⓑ 5. ⓑ 6. ⓑ
B. 1. pad
2. in shape
3. burn calories
Sentence Practice (p. 33)
1. There are many ways to stay in shape.
2. Some are more fun than others.
3. It also burns a lot of calories.
4. The rock is not real and not very high.
Summary (p. 33)
① shape ② bounce ③ rock climbing
④ muscles ⑤ dangerous
Unit 16 Animalympics
Word Practice (p. 34)
A. 1. ⓐ 2. ⓑ 3. ⓐ
4. ⓑ 5. ⓑ 6. ⓐ
B. 1. favorite
2. annual
3. beat
4. record
Sentence Practice (p. 35)
1. Cheetah is famous for her speed.
2. We have some rookies for the high jump.
3. She broke her record!
4. Klipspringer just beat him by four meters!
Summary (p. 35)
① dash ② lead ③ broke
④ beat ⑤ winner
My Best Reading_WB1_Answer key
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