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问题 单项选择题

（）是一种通过电化学设备直接、高效地将反应物的化学能转换为电能的发电技术。

A、光伏发电技术

B、风力发电技术

C、燃料电池发电技术

D、生物质能发电技术

答案

参考答案：C

填空题

用括号内所给单词的适当形式填空。

1. There used to ______ (be) a cinema here, didn't there?

2. I'm still afraid of ______ (go) out alone at night.

3. The trees should ______ (water) very often.

4. The Internet makes our life ______ (easy) than ever before.

5. Mary wants to get her ears ______ (pierce).

6. Doing sports is good for your _______ (healthy).

7. He has been ______ (die) for five years.

8. The boy lay on the ground and soon fell ______. (sleep)

9. The singer performed ______. (beautiful)

10. ______ (lucky), he failed in the English exam.

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单项选择题

导线型号是由代表导线材料、结构的汉语拼音字母和标称截面积（平方毫米）三部分表示的，如T字母处于第一位置时则表示（）。

A.钢线

B.铜线

C.铝线

D.铝合金线
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