试题与答案

某课外小组利用下图所示装置分别做如下实验: (1)在试管中注入某红色溶液,加热

题型:实验题

题目:

某课外小组利用下图所示装置分别做如下实验:

(1)在试管中注入某红色溶液,加热试管,溶液颜色逐渐变浅,冷却后恢复红色,则原溶液可能是________溶液;加热时溶液由红色逐渐变浅的原因是___________________。

(2)在试管中注入某无色溶液,加热试管,溶液变为红色,冷却后恢复无色,则此溶液可能是________溶液,加热时溶液由无色变为红色的原因是_______________________。

答案:

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题型:阅读理解

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     Mr. Smith works in an office. He is very busy and has no time to have a good rest.Every evening,when he

comes from his office, he's always tired and wants to go to bed early.But his wife often has a lot of interesting

things to tell him after supper.She doesn't stop talking until she falls asleep,but it's usually too late and Mr.

Smith has to get up in time in the morning when she is asleep.

     One day the man felt tirreble and couldn't go to work.He decided to go to see a doctor.And Mrs Smith went

to the hospital with him. Before her husband said what was the matter with him,the woman had told the doctor

all and the man understood why.He wrote out a prescription (处方). And when Mr. Smith brought the medicine

to the resulting room,the doctor said to her,"The bottle of medicine is for your husband and the pills are for

you.

     "For me?" the woman said in surprise,"I'm fine.I don't need anything medicine!" "I don't think so,madam,"

said the doctor."They are sleeping pills.Your husband will soon be all right if you take them." 

1. Mr. Smith is _______.

A. too busy to have a good rest.

B. too busy not to have have a good rest.

C. busy enough to have a good rest.

D. not busy enough to have a good rest.

2. The sentence "His wife doesn't stop talking until she falls asleep"means________.

A. she doesn't stop talking when she falls asleep.

B. she doesn't stop talking after she falls asleep.

C. She keeps talking until she falls asleep.

D. She likes talking as she falls asleep.

3. Why does Mr. Smith have to get up when his wife is asleep in the morning?

A. Because he can't fall asleep.

B. Because he has to go to work.

C. Because he doesn't want to sleep.

D. Because his wife ask him to get up.

4. Why couldn't Mr. Smith go to work one day?

A. Because he didn't want to work.

B. Because his wife didn't let hin go.

C. Because he fell ill.

D. Because he was too tired to go to work.

5. The sentence "Your husband will be all right if you take them."means Mr. Smith will

   soon be all right if ______.

A. Mrs Smith takes the bottle of medicine.

B. Mr. Smith takes the pills.

B. Mr. Smith takes the bottle of medicine.

D. Mrs Smith stops talking too much at night.

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