问题 多选题

某气体可能由九年级化学教材中常见的一种或多种气体组成,经测定其中只含有碳、氧两种元素,其质量比为1:2.则关于该气体的说法正确的是(  )

A.一定是纯净物

B.可能是由02、C0和C02三种气体组成的混合物

C.可能是C02、02的混合物

D.可能是C0、C02的混合物

答案

BD

完形填空

An important question about eating out is who pays for the meal. If a friend of yours asks you to have lunch with him, you might simply say something like this, “I’m afraid I’ll have to find a cheap place because I don’t have 1) _______ ________.” The other person may say, "OK., I’ll meet you at McDonald’s. "This means that the two agree to go Dutch, that is, each person pays for himself. He may also say, "Oh, no. I want to take you to lunch at Johnson’s ", or "I want you to try the steak(牛排) there. It’s great. "This means the person wants to pay for both of you. If you feel friendly towards this person, you can go with him, and you needn’t pay for the meal. You may simply say, "Thank you. That would be very nice."

American customs(习俗) about who pays for a date(约会) are much the same as those in other parts of the world.3) In the old days, American women wanted men to pay for all the meals. But, today, a woman who is a university(大学) student or is working in the business world will usually pay her own way during the date. If a man asks her to dinner, outside the normal working hours ,it means "come as my guest(客人). " So you can see it is better for you to make the question clear at the very beginning. 

将1)处填上适当的词,使句意完整:______________ ______________

2.回答问题: What does ‘to go Dutch’ mean ? __________________________________________________________.

3.将划线的句子译成中文:__________________________________________________________

4.找出文中与下列句子意思相近的句子

So you can see you’d better make the question clear at the start.

_______________________________________________________________________

5.找出文中最能表达短文主题的句子______________________________________________________________________________

单项选择题