题目列表(包括答案和解析)
词语释义
Our environment is in t ________. We are making the air, rivers, lakes and seas dirty every day. You many think that there's n ________ you can do to help. That's not true. In fact, there are many things you c ________ do to help the environment. Here are a f ________.
Cars are g ________ out carbon monoxide
（一氧化碳CO).Some people b ________ CO is causing global warming. So try to walk, bicycle, or use public t ________.Showers use a lot of water. Buy a special
“low-flow” showerhead or take s ________ showers. It can cut the use of water in half.We use a lot of e ________ to heat and cool homes. So turn the heat down at night. Replace regular
（平常的）light bulb. Use fluorescent（荧光的）because it uses less energy.Don't use disposable
（可任意使用的）products. If you use disposable products, you should use products made from recycled m ________. Also, recycle all the time.She is good ________ swimming, but doesn't do well ________ diving．
A．at; in
B．on; at
C．in; on
D．in; at
Children don't go ________ school ________ Sundays.
[
]A
．at,in B．to,from C．on,on D．to,on
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I go to school ________ severn thirty ________ the morning.
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