1. We should not
drive
so much because there is not much
oil
.
2. Peter
collected
some bottles and
reused
them to make
clothes
.
3. We should use
paper
bags and
glass
bottles.
4. You can't
waste too much
time and money on games.
5. We must save
water
and
energy
.
答案：1. drive, oil 2. collected, reused, clothes 3. paper, glass 4. waste too much 5. water, energy
八、根据上下文和首字母提示完成短文。
Trees are
useful
to birds and animals. Trees give them food and
houses
. Trees are useful to us. They give us
wood
. We use wood to make houses, paper and many other things. Trees give us fruit. Trees give us oxygen (氧气). They help keep the
air
clean. They
protect
us from sandstorms (沙尘暴) and floods (洪水). But we
cut
down too
many
trees. Many birds and animals lose their homes. Our Earth becomes
hot
and dirty. We should
save
trees and
plant
more trees.
答案：useful, houses, wood, air, protect, cut, many, hot, save, plant
九、按要求写句子。
1. They use too many plastic bags. (用 should not 改写句子)
They should not use too many plastic bags.
2. No littering. (改为同义句)
Don't litter./You shouldn't litter.
3. We use the plastic again. We can use it to make a toy. (合并为一句)
We reuse the plastic to make a toy.
4. We can use coal and oil to produce (制造) energy. (用 come from 改写句子)
Energy comes from coal and oil.
5. can, reuse, glass, how, we, the, bottle (?) (连词成句)
How can we reuse the glass bottle?
答案：1. They should not use too many plastic bags. 2. Don't litter./You shouldn't litter. 3. We reuse the plastic to make a toy. 4. Energy comes from coal and oil. 5. How can we reuse the glass bottle?
(
F
) 1. All the places on Earth are very hot.
(
F
) 2. Plants don't need light and water.
(
T
) 3. The Earth can provide us with air, water and food.
(
T
) 4. The Earth is our home.
(
F
) 5. We should put our rubbish into the sea.
答案：1. F 2. F 3. T 4. T 5. F
