问题 选择题

关于“舌尖上的化学”,下列说法不科学的是(  )

A.为了身体健康,必须均衡膳食

B.为预防缺碘性疾病,可食用适量海带

C.为延长食品保质期,在食品中添加大力防腐剂

D.为使发面食品松软可口,制作时可添加适量碳酸氢钠

答案

答案:C

题目分析: A、只有均衡膳食,才能合理地摄入保证人体健康所需要的各种营养,此项正确。B、海带中含有较丰富的碘元素,可为人体补充碘元素。此项正确。 C、加入的防腐剂的量过大,则会影响人体的健康,此项错误。D、碳酸氢钠可在加热的情况下生成二氧化碳,二氧化碳加热时膨胀从而使食品松软。此项正确。所以应选C项。

阅读理解

Reading comprehension.

     Ron loved basketball. One afternoon on his way to a basketball game, he was walking and dreaming about

playing college basketball the following year. As Ron was walking to the game, a car hit him so hard that he

was thrown three feet into the air.

     Ron woke up in a hospital room. When he learned that both his legs were broken, he realized his college

basketball dreams were over. Ron did what the doctors told him, but his progress was slow. When he left the

hospital, Ron was sent to a health center for physical treatment.

     A week after he arrived there, he met Sunny. Sunny was a coach.His legs were hurt paralysed (瘫痪的)

from a skiing accident. Even though he couldn't move his legs, Sunny coached of a basketball team called the

Suns. Everybody on the team played from a wheelchair. Sunny invited Ron to join the game. Ron played

badly, but for the first time since the accident, he stopped feeling sorry for himself.

     After becoming a part of the Suns, Ron improved quickly. Basketball was like medicine for him. And

whenever Ron became depressed or angry, Sunny was there to encourage and help him. The day before Ron

left the center, he had dinner with Sunny. He asked Sunny how he managed to be generous and cheerful, even

with his paralysis.

     Sunny smiled and said, "It's really quite easy. When you keep your face to the sun, the shadows (阴影) fall

behind."

1. What happened to Ron on his way to a basketball game?

A. A car hit him.

B. He met his coach.

C. His doctor called him.

D. He fell down and cut his foot.

2. The underlined word "depressed" means _____ in Chinese.

A. 懒惰的

B. 好奇的

C. 沮丧的

D. 激动的

3. What is the most important thing we can learn from the story?

A. Basketball can teach people about life.

B. Keep smiling when you face difficulties.

C. Life is more difficult for the paralysed.

D. Skiing is more dangerous than basketball.

问答题 简答题