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【判断题】
珊瑚看似像石头和植物,但每一个其实是由成千上万的微小珊瑚虫组成的。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】全站仪可以测量( )。
【简答题】用所给词的适当形式填空。 1. She wants to tell us about English. (learn) 2. The boy didn't his homework last night. (do) 3. The woman will to Beijing in autumn. (go) 4. I have a lot of words in primary school.(lea...
【简答题】enjoy the fresh air
【单选题】People should open the window in the morning to make air ________ in order to keep the indoor air fresh
A.
subscribe
B.
circulate
C.
accelerate
D.
reject
【单选题】The air in the house does not remain fresh very long. It's because ______.
A.
the fresh air can't come into the house
B.
there is only a little fresh air coming in and a little waste going out
C.
the air in the house can't remain fresh
D.
the house gives off wastes
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