问题 选择题

下列哪项不是生物的共同特征(  )

A.生长、发育

B.遗传、变异

C.呼吸

D.无机物变有机物

答案

答案:D

生物具有以下特征:1.生物的生活需要营养,2.生物能够进行呼吸,3.生物能排出体内产生的废物,4.生物能够对外界刺激作出反应,5.生物能够生长和繁殖,6.除病毒外,生物都是由细胞构成的。在繁殖过程中发生了遗传、变异属于生命现象;无机物变有机物是化学反应。故选D。

阅读理解

阅读理解。

     In Canada and the 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 on Saturday night?"

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

     To reply to an invitation (回应邀请), either say thank you and accept (接受) , 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."

     "Why not get together for a party sometime?"

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

     They are really just polite way of ending a conversation. They are not real invitations because they

don't mention (提到) a specific (确定的) 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 "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 Canadaians and Americans often invite friends for meals at home?

A. Because they can save time.              

B. Because they can spend less money.

C. Because they enjoy entertaining at home.  

D. Because they have modern and beautiful houses.

2. Which of the following is a real invitation?

A. If you're free, let's go for a drink sometime.

B. Please go to the cinema with me some day.

C. Would you like to have a cup of tea with us sometime?

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

3. If people say "Let's get together for lunch some day", you just say "____".

A. That would be nice.    

B. How about this weekend?

C. Oh, sorry. I'm busy.    

D. That's great. I'll be there on time.

4. People use " an unreal invitation" in order to show that ____.

A. they're trying to be friendly.  

B. they're try to be helpful.

C. they're trying to make friends with others.  

D. they haven't got ready for a party yet.

5. What's the meaning of the phrase "sound like"?

A. 看上去像      

B. 听起来像      

C. 闻起来像        

D. 摸起来像

单项选择题 A1/A2型题