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问题 单项选择题

属于化学性致病因素的是（）

A.病毒

B.蛇毒

C.寄生虫

D.紫外线

答案

参考答案：B

填空题
Choose the proper phrase from the box and complete the sentence with the correct form.
     
all the time   tidy up   as well as   such as    as a result   come out   feel like    a couple of     in fact    at first

1. Liu Qian is a popular magician and has shown how wonderful magic is. ________, more teenagers begin to get interested in magic after watching his performances.
2. The boss ________ the staff is on holiday in Sanya. No one can help you.
3. At school we can try lots of interesting optional courses on Friday afternoon, _________ Chinese
medicine and English drama.
4. The teacher often tells the little kids to _________ the toys by themselves.
5. The cleaner cleared the snow on the road _________ until he was sent to hospital.
6. —What do you _________ the Chinese New Year?
    —It's lively and cheerful.
7. He refused my suggestion _________ but later he changed his mind.
8. I bought Twilight series as soon as they _________.
9. He has made _________ new friends since he moved to the village.
10. I like bungee jumping very much. _________ I'm crazy about it.
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判断题

框架结构建筑的重点是各种构件的相互连接。( )
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