问题 选择题

可以鉴别(即区分)酒精和蒸馏水的化学方法(  )

A.闻气味

B.测定密度

C.分别点燃

D.尝味道

答案

A、就叫有特殊的芳香气味,而蒸馏水没有气味,但是利用了它们的物理性质,与题目要求不符,故A错;

B、酒精的密度和蒸馏水的密度不同,可以区分,但是密度也是物理性质,与题目要求不符,故B错;

C、酒精可以燃烧,而蒸馏水不能燃烧,所以可以用燃烧的方法来区分两种物质,故C对;

D、不主张用尝味道的方法来区分物质,故D错.

故选C.

阅读理解

阅读理解。

      After I have lunch in an inn (小饭馆), I look for my handbag. I put it on a chair beside

the door and now it isn't there! As (当······时候) I am looking for it, the inn-keeper

comes in.

      "Do you have a good lunch?" he asks.

      "Yes, thank you," I answer. "But I can't pay (付款) the bill. Somebody takes away my bag.

      "The inn-keeper smiles and goes out at once. In a few minutes (过了一会儿) he comes

back with my bag and gives it to me.

      "I am very sorry," he says. "My dog takes it into the garden. He often does this."

1. The woman has a good lunch, but she ______ at first.

A. doesn't pay for it

B. can't pay for it

C. refuses (拒绝) to pay for it

D. wants to pay for it next time

2. _______ takes the woman's bag away.

A. A thief (小偷)

B. The woman herself

C. The inn-keeper

D. The dog in the inn

3. The inn-keeper knows _______.

A. who takes the woman's bag away .

B. the woman doesn't want to pay for her lunch

C. the woman can give him a lot of money

D. the dog can find the lost bag

4. The dog takes the bag away because it _______.

A. wants to play with it

B. wants to see if (是否) there is money in it

C. wants to help the inn-keeper to get more money

D. likes to see people looking for their bags

5. The underlined word "bill" in Paragraph 3 means _______.

A. a piece of bread

B. a kind of drink

C. a piece of paper, from which you can know how much you must pay

D. a piece of paper, from which you can know what food they sell

填词完成句子,第一个字母已给出

6. The woman puts her bag on a chair b______ she has her lunch.

7. The woman t______ somebody takes her bag away.

8. In this inn people eat first and t______ pay.

9. The inn-keeper k______ what happens (发生) to the woman's bag.

10. The inn-keeper's dog often p______ with the customers' bags.

单项选择题