用方框中所给单词的适当形式填空，每个单词限用一次。

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中单词的正确形式填空
Do you know how to be a top student? Top students are decided by a new way now. New rules for middle school students    【小题1】  (come) out in March. The best students should not only have good grades. You’ll be a top student    【小题2】   you follow the new rules.  【小题3】  (one), you need to be honest. You should never copy others’ homework. Second, good students love animals and care  【小题4】  other people. They try to do something to protect animals, too. Are you one of them? Third, you should learn that teamwork  【小题5】   important. So be friendly to the people you are with and it can make your team stronger.

Teenagers should learn to protect (保护) ______from all kinds of dangers.  

A. them              B. they         C. their        D. themselves

MSG(monosodium glutamate) is a food additive(食品添加剂),which has been widely used by many food factories all over the world since it appeared first in Japan in 1909.

  MSG is a substance that is added to some food to improve its original(原先的) taste and colour. It is used in foods around the world such as cakes, bread, frozen meats, fish and vegetables. In the beginning, people thought MSG was safe just like salt and sugar. However, in 1968 some people reported they seemed to have bad reactions(反应) to MSG after having had a meal at a restaurant. They included headaches and quick heartbeat(心跳).It was also reported that MSG excited a person’s brain and caused his death in Japan. Scientists think that MSG may lead to many neurological disorders(神经紊乱).In mice studies done by a university, the evidence showed the mice didn’t want to eat the food including MSG.

  Today many food companies “hide” MSG on food labels(标签) by using different names. If you see “natural flavorings”,“hydrolyzed protein”and “spices” in a food label, you are probably seeing a hidden way to “report” MSG in a food label. Every time we have a meal in a restaurant, we always feel the food very delicious to taste, but sometimes it is dangerous for our health because some poisonous food additives have been added to the food.

  To protect people’s health, our governments, from central to local, are taking actions to stop factories producing poisonous food additives.

1. Monosodium Glutamate is _______

A. a food             B. an additive             C. a factory         D. a country

2.MSG is often used in ______.

A. frozen meats       B. cups                  C. clothes            D. book covers

3.The examples in the second paragraph tell us ________.

A. the food including MSG is delicious           B. people like to eat in a restaurant

C. mice like eating the food including MSG        D.MSG is not safe sometimes

4.If you see “natural flavorings”,“hydrolyzed protein” and “spices” in a food label, you will know ­­­­­­­_____________.

  A. you must eat the food in a hidden way

  B. the food label must be hidden

  C.MSG is probably added to the food

  D. you must report the food to your parents

5.The underlined word “substance” in the article means __________.

  A. colour          B. material              C. taste            D. food