问题 多项选择题

维生素是维持机体正常代谢所必需的低分子有机化合物根据溶解性分为脂溶性和水溶性两种,下列哪些是水溶性维生素()

A.维生素C

B.维生素E

C.维生素B2

D.维生素B6

答案

参考答案:A,C,D

阅读理解

阅读理解。

     In a book called Magnificent Obsession, by Lloyd C. Douglas, a description is given of people helping

others but doing it secretly. When difficult problems worried an individual, friends nearby would meet to

discuss possible solutions without the individual knowing their actions. When a solution was agreed upon,

one or two of the friends would carry out the plan and solve the problem secretly, to the great delight of

the worried individual. The helpers would stand by privately, content with their success. No reward was

given to the problem solvers, not even a sincere "thank you", because they were never known.

     This concept is popular today but in a different way. The phrase "pay it forward" is now used when

one person helps another. However, the person helped may not be able to repay the person or group that

helped them. So rather than return the favor to their helpers, they are supposed to help someone else in the

future, which means they pay it forward. It is a sense of responsibility which makes us want to give back

in equal measure to the one who has helped us. But, in this case, the responsibility turns to helping someone

in the future.

     Suppose your elderly grandmother pays part of your schooling. She may tell you there is no need to

repay her because it is a gift from someone who loves you very much. Nothing would please her more than

to have you use her money to get a good education.

     You may never be able to repay her for such a gift. However, she not only gave you some money, but

she provided you with an example that you should also help other people who need it. People with serious

needs are everywhere. Many are children who need better clothes, more books and even better schools.

Some are elderly people who can't afford their medicine or a doctor's care. Consider how you can "pay it

forward" rather than pay money back to your grandmother.

1. The helpers in the book "Magnificent Obsession" were not rewarded because _____. [ ]

A. they hadn't solved the problems thoroughly

B. they had solved the problems secretly

C. they were friends of the worried individual

D. they expected to be paid back in the future

2. The underlined word "pay it forward" means _____. [ ]

A. to repay someone who has helped you

B. to pay someone else who needs help

C. to help someone who has helped you

D. to help someone else who needs help

3. What does the writer suggest with the example of "your elderly grandmother"?[ ]

A. We should learn to respect our grandparents.

B. We should work hard to get a good education.

C. We should also lend a hand to other people in need of help.

D. We should never forget to repay people for their help.

4. From the passage we know _____. [ ]

A. everybody needs help

B. more children need help than elderly people

C. it costs a lot of money to "pay it forward"

D. nowadays many people help others without being repaid

5. By writing the passage, the author wishes people in the world to be _____. [ ]

A. unselfish

B. mysterious

C. honest

D. unforgettable

不定项选择