问题 选择题

现有碳酸钠、碳酸氢钠、氢氧化钠、氯化铁和苯酚五种物质的溶液,它们之间有如图所示转化关系,图中每条线两端的物质可以发生反应(图中各字母表示上述不同的物质),下列判断不合理的是

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A.X一定是碳酸钠溶液

B.Y一定是氯化铁溶液

C.Z可能为碳酸氢钠溶液

D.M、N必定各为苯酚、氢氧化钠溶液中的某一种

答案

答案:A

阅读理解

阅读理解。

     In Canada and United States, people enjoy entertaining (请客) at home. They often invite friends over for

a meal, a party, or just for coffee and conversation.

     Here are the kinds of things people say when they invite someone to their home:

     "Would you like to come over for dinner Saturday night?"

     "Hey, we're having a party on Friday. Can you come?"

     To reply to an invitation, either say thank you and accept, or say you're sorry and give an excuse: "Thanks, I'd love to. What time would you like me to come?" or "Oh, sorry. I've tickets for a movie,"

     Sometimes, however, people use expressions that sound like invitations but which are not real invitations.

For example:

     "Please come over for a drink sometime."

     "Let's get together for lunch soon."

     "Why don't you come over and see us sometime soon?"

     They are really just polite ways of ending a conversation. They are not real invitations because they don't

mention a specific (具体的) time or date. They just show that the person is trying to be friendly. To reply to

expressions like these, people just say: "Sure, that would be great!" or "OK. Yes, thanks."

     So next time when you hear what sounds like an invitation, listen carefully. Is it a real invitation or is the

person just being friendly?

1. Why do people often invite friends to their homes in Canada and the United States?

A. Because they have modern and beautiful houses.

B. Because they don't like going out for entertainment.

C. Because they enjoy entertainment at home.

D. Because they can spend less money.

2. Which of the following is NOT a real invitation?

A. "Would you like to have a cup of tea with us this evening?"

B. "Please go to the concert with me some day."

C. "I've two tickets here. Can you go to the concert with me?"

D. "If you're free, let's go to Wang's for a drink."

3. People use "an unreal invitation" in order to show that ______.

A. they're trying to be friendly

B. they're trying to be honest

C. they're trying to make friends with others

D. they have already prepared for a party

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