四、从方框中选择适当的单词填空。
useful, reuse, use, save, waste
1. We should
2. We should not drive so much because cars
3. Energy is
4. We should not
useful, reuse, use, save, waste
1. We should
save
energy. 2. We should not drive so much because cars
use
a lot of energy. 3. Energy is
useful
for us. 4. We should not
waste
water. We should reuse
and save it.答案：1. save 2. use 3. useful 4. waste, reuse
五、连词成句。
1. clean, things, every, day, use, to, we, water (.)
2. coal, oil, comes, and, energy, our, most, of, from (.)
3. we, not, should, down, cut, many, too, trees (.)
4. much, too, plastic, bad, is, for, Earth, the (?)
1. clean, things, every, day, use, to, we, water (.)
We use water to clean things every day.
2. coal, oil, comes, and, energy, our, most, of, from (.)
Most of our energy comes from coal and oil.
3. we, not, should, down, cut, many, too, trees (.)
We should not cut down too many trees.
4. much, too, plastic, bad, is, for, Earth, the (?)
Is too much plastic bad for the Earth?
答案：1. We use water to clean things every day. 2. Most of our energy comes from coal and oil. 3. We should not cut down too many trees. 4. Is too much plastic bad for the Earth?
(
(
6
) (4
) (3
)(
2
) (1
) (5
)答案：6 4 3 2 1 5
二、选择与下列句子匹配的表达。
(
(
(
(
A. Because too much plastic is bad for the Earth.
B. Because trees help keep the air clean.
C. Because cars use a lot of energy which is limited(有限的).
D. Because there is not too much water.
(
D
) 1. We should not waste water. (
C
) 2. We should not drive so much. (
B
) 3. We should not cut down too many trees. (
A
) 4. We should not use too many plastic bags or bottles. A. Because too much plastic is bad for the Earth.
B. Because trees help keep the air clean.
C. Because cars use a lot of energy which is limited(有限的).
D. Because there is not too much water.
答案：1. D 2. C 3. B 4. A