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问题 单项选择题

线运行的带式输送机机头.机身和机尾的中心线应成一条（）。

A.水平线

B.直线

C.并行线

D.样条线

答案

参考答案：B

阅读理解
阅读理解.
                                                        Some Advice on Travel.
1. Forget Fashion (时尚)! Always wear your most comfortable clothes when going on long journeys.
2. Traveling on trains and buses can be boring, so take a good book to read.
3. If you're going somewhere cold, remember your warm clothes!
4. Or, if you are going somewhere sunny, remember to wear sun block (防晒霜) and sunglasses.
5. Always take a camera with you to capture those special moments.
6. Be careful with your things whenever you go to busy places, like a train station. There are often
    thieves there!
7. Always leave room in your bag for buying presents on the way home.
8. Most countries have lower prices for students, so if you have One, take your student card with
    you and save money.
9. Bus tours often stop at expensive shops along the way, save your money by buying presents at
    local shops.
10. If you travel abroad, remember to take your passport. (护照) Whatever you do, don't lose it!
1. If you go to Hainan Island for a trip in summer, you should take _____ with you.    
A. warm clothes and sports shoes
B. sunglasses and sun block
C. fashionable clothes and a big bag
D. some fruit and drinks
2. According to the passage, _____ is a good way to keep away from boredom (单调) while you are
    on a train or a bus.
A. taking a camera
B. reading a good book
C. listening to music
D. sleeping for some time
3. You must always _____ while you are at some busy places because there are often thieves there.
A. put your things away
B. look after your things well
C. give your things away
D. get your things ready
4. If a student wants to buy some presents at lowerprices while traveling,he should show _____ to the
    shop assistant.
A. prices
B. his things
C. his passport
D. his student card
5. The underlined word "capture" in this passage means _____ .
A. 拍摄
B. 感受
C. 抓住
D. 控制
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单项选择题

长钻孔注水的降尘效率为（）。

A、60%~90%

B、40%~70%

C、40%~60%

D、70%~80%
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