问题 选择题

近年来,食品安全事故频繁发生,人们对食品添加剂的认识逐渐加深。下列关于食品添加剂的认识正确的是

A.食品添加剂必须用纯天然物质才对人体无害

B.SO2漂白生成的无色物质不稳定,可广泛用于食品漂白

C.我们每一个人都要多食用加碘食盐和加铁酱油

D.食醋中含少量乙酸,可同时用作防腐剂和调味剂

答案

答案:D

题目分析:A、食品添加剂在合理的使用范围内对人体是无害;B、SO2漂白生成的无色物质不稳定,可用于纸浆、棉、毛漂白,SO2有毒,故不能用于食品漂白;C、用语偏激,太绝对,一般是不能作为答案的;我们每一个人要适当食用加碘食盐和加铁酱油,过反会对人体有害的;

阅读理解

阅读理解。

     People need to relax and enjoy themse1ves.One way they can have a good time is to watch a baseball

game or another sports event. Even thousands of years ago, groups of people gathered to watch skilled

athletes (运动员).   

     Over 2000 years ago in Greece, certain days in the year were festival days. These were holidays when

people stopped work and enjoyed themselves. They liked to watch athletes take part in races and other games

of skill.   

     The most important festival was held every four years at the town of Olympia. It was held in honor of the

Greek god Zeus(Zus). For five days, athletes from all parts of the Greek world took part in the Olympic Games. At the Olympic Games, people could watch them box, run, jump and so on. There was a relay race between

two teams of men in which a lighted torch (火矩) was passed from runner to runner. The Olympic Games

were thought to be so important that cities which were at war with one another had to stop fighting. People

were allowed to travel to the games safely. Thousands of people came to Olympia from cities in Greece and

from her colonies(殖民地)in Africa, Asia and Italy. They met as friends to cheer their favorite athletes and to

enjoy themselves.

1. What happened in Greece over 2000 years ago?  

A. People stopped work and enjoyed themselves.   

B. The cities there were often against one another.   

C. People watched baseball games.   

D. People didn't go to any games at all.  

2. What were those countries in Africa?

A. Friends

B. Enemies

C. Colonies

D. Other cities   

3. What did people do at the games?  

A. They fought.

B. They just talked to friends.   

C. They cheered for good athletes.

D. They tried to find friends.   

4. Greek cities then were fighting so they_____.  

A. were weak

B. were strong   

C. couldn't go to other cities freely

D. could see each other   

5. The best title for the story is "_____".   

A. Greece at War

B. Together for the Games

C. Stop Fighting

D. Sport

问答题 简答题