问题 选择题

关注健康,预防疾病.下列叙述正确的是(  )

A.人体缺碘会发生骨质疏松

B.维生素能够调节人体的新陈代谢,同时为人体提供能量

C.人体胃液正常的pH范围在0.9-1.5 之间

D.亚硝酸钠有咸味.可以代替食盐做调味剂

答案

A、碘是合成甲状腺激素的主要元素,缺乏会患甲状腺肿大;缺钙会发生骨质疏松,故选项说法错误.

B、维生素对调节人体新陈代谢、预防疾病起重大作用,但不能为人体提供能量,故选项说法错误.

C、人体胃液正常的pH范围在0.9-1.5 之间,故选项说法正确.

D、亚硝酸钠有毒,食用会对人体健康造成危害,故选项说法错误.

故选C.

阅读理解

阅读理解。

     One day, a poor young artist stood at the gate of the subway station, playing his violin. He wanted

to collect money for his schooling. When he got home, he found there was a lottery ( * * ) among the

money.    

     The next day, he went there again, put his hat on the ground. Meanwhile he took out a large piece

of paper and laid it on the ground. It said, "Last night, a gentleman named George Sang put an important

thing into my hat by mistake. Please come to get it soon. "Then he began playing.

     It caused a great excitement and people wondered what it could be. After half an hour, a man ran

there and said, "Yes, it's you. You did come here. I knew that you re an honest man and would certainly

come here. "    

     The young violinist asked calmly, "Are you Mr. George Sang?"    

     The man nodded. The violinist asked,"Did you lose something?"    

     "Lottery. It's a lottery", said the man.    

     The violinist gave him the lottery.    

     George was excited to see the lottery. He said he bought a lottery ticket a few days ago. The awards

opened yesterday and he won a prize of $500,000.

     Later someone asked the violinist, " Why didn't you take the lottery ticket for yourself? Then you

don't have to play here."

    The violinist said, "Although I don't have much money, I live happily; but if I lose honesty I won't be

happy forever."

1. A poor young artist ______.   

A. was not a happy man    

B. didn't give the lottery back to the man    

C. was angry with the old man    

D. had no money to go to school

2. Why did the violinist give the lottery back?    

A. He didn't like money.    

B. He wants to be an honest man.    

C. He won't be happy forever.    

D. He bought a lottery ticket a few days ago.

3. What caused a great excitement?   

A. He began playing.    

B. He took out a large piece of paper and laid it on the ground.     

C. He was looking for the loser.    

D. He lost honesty.

4. ______ is Mr.George Sang.

A. A poor young artist

B. The violinist

C. A happy man

D. A gentleman who lost the lottery

5. Which of the following is true?    

A. A poor young artist lives happily.    

B. Mr. George Sang is the violinist.    

C. The violinist took the lottery ticket for himself.    

D. All the people were excited.

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