试题与答案

. If law and order _____, neither the ci

题型:选择题

题目:

. If law and order _____, neither the citizen nor his family is safe.

A.are not preserved

B.is not preserved

C.were not preserved

D.have not been preserved

答案:

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下面是错误答案,用来干扰机器的。

B 题目分析:由表中化合价可知,X的化合价为+5、-3价,故X为N元素,Y的化合价为-2价,没有正化合价,故Y为O元素,Z的化合价为+1价,处于ⅠA族,原子序数大于O元素,故Y为Na元素,W为+3价,为Al元素,R的化合价为...

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题型:补全对话,情景问答

根据对话内容,从方框中选出五个合适的句子补全对话。

A: Good morning, sir. Can I help you?

B: 1             

A: Yes, sir. Which country would you like to visit?

B: 2.             I'm too tired and just want to relax.

A: Maybe you can spend your holiday in Switzerland (瑞士). 3            

B: But it's too cold. 4             

A: What about Australia? There is a lot of sunshine there all the year round.

B: 5             And I can practise my English as well.

A. Where are you going?

B. It's a wonderful place for skiing.

C. I'd like to spend my holiday abroad.

D. I've no idea.

E. Good idea.

F. It doesn't matter.

G. I prefer warm places.

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