在西西里岛的一个坟墓中发现的一个陶瓷花瓶的样本证明，这个花瓶是在希腊制造的。由于该坟

单词拼写。根据下列句子及所给单词的首字母，写出各单词正确的完全形式（每空限写一词）。

1. This cake t_____ delicious. Would you like a try?

2. Lucy was badly hurt in a traffic a_____ last week.

3. Yesterday Michael a_____ to his boss for being late.

4. These books b_____ to Sarah-I must give them back to her.

5. Mum is cooking in the k_____ while Dad is watching TV.

6. About 71 percent of the earth's surface is c_____ by water.

7. I u_____ go to bed at 10:00 p.m., but I stayed up till 11:00 last night.

8. Plants and a_____, including humans, need food and water to survive.

9. He was p_____ of the Olympic Gold Medal he won for his country.

10. Each student is allowed to borrow two books at a time from the school l_____.

目前常见的预防碘缺乏病的措施是（）

A.口服碘化物

B.碘化饮水

C.碘化食盐

D.碘化食品

E.预防注射碘油

某农田作物需施含氮元素的化肥．如果施用了尿素[化学式为CO（NH₂）₂]120kg，含氮______kg．

砌筑拱圈时应符合哪些规定？

吡嗪酰胺

A．结核菌抑菌剂
B．结核菌全杀菌剂
C．结核菌半杀菌剂
D．对结核菌无影响
E．对末梢神经有损害