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【单选题】
有关动车组的特征下列说法不正确的是（）A.
动车组一定是电力驱动
B.
动车组两端均能够驾驶
C.
动车组一定自带动力
D.
动车组一定固定编组
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【单选题】We should try not to use plastic bags,because they will____pollution for our soil.
A.
expect
B.
affect
C.
cause
【单选题】We shouldn't use plastic bags. We should take our own bags ___.And we also should walk ___driving to the supermarket.
A.
instead，instead
B.
instead，instead of
C.
instead of，instead
D.
instead of，instead of
【单选题】Don't use plastic bags when you go ______.
A.
shopping
B.
to shop
C.
shop
D.
the shop
【单选题】______ you use plastic bags, you mustn’t throw them about.
A.
After
B.
When
C.
While
D.
Before
【单选题】—Can you tell me________ to live a low-carbon(低碳) life? —OK. Use both sides of the paper. Don't use plastic bags or disposable goods(一次性用品).
A.
how
B.
why
C.
when
D.
where
【单选题】进行科学实验时，都必须制定实验计划，以确保实验顺利完成。实验计划包括 [ ]
A.
准备实验材料和实验用具
B.
确定实验程序
C.
提出实施实验过程中应注意的事项
D.
以上都是
【多选题】find environmental behavior 1.use plastic bags 2.use cloth bags 3.ride bicycle 4.plant trees 5. use disposable dinnerware 6. sort refuse 7.use public transport 8.protect wildlife
A.
use cloth bags
B.
ride bicycle
C.
plant trees
D.
sort refuse
E.
use public transport
F.
protect wildlife
【简答题】登高作业安全用具的实验主要是拉力试验，实验周期是一年。()
【单选题】You mustn't _______ them everywhere _______ you use plastic bags. [ ]
A.
fall; until
B.
fall; before
C.
drop; while
D.
drop; after
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