不同的对外贸易经营权决定了经营者经营范围的不同。( )

阅读理解。

      Your body, which has close relations with the food you eat, is the most important thing you own, so

it needs proper treatment and proper nourishment (食物). The old saying "an apple a day keeps the

doctor away." is not as silly as some people think. The body needs fruit and vegetables because they

contain vitamins. Many people take extra vitamins in pill form (丸剂), believing that these will make them

healthy. But a good diet is made up of nutritive food and this gives all the vitamins you need. The body

doesn't need or use extra vitamins, so why they waste money on them?

     In the modern Western world, many people are too busy to bother about eating properly. They throw

anyt hing into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse

by bad eating habits is frightening.

1. The old saying referred to in the passage tells us that        .

A. eating apples regularly does lots of good to our health.  

B. the apple is the best among all kinds of fruits  

C. apples can take the place of doctors

D. an apple is a sure cure for illness

2. In the second paragraph, the writer tries to let us know        .

A. our bodies need food, or we can't live  

B. often eating apples is a good habit  

C. taking extra vitamin pills is completely useless  

D. a good diet is of great importance for our health  

3. In the modern western countries        .

A. people won't want to pay more attention to their eating  

B. people throw everything into their stomachs without chewing.

C. list of people's illness are caused or made worse by bad eating habits

D. people are only too busy to cook meals for themselves  

4. From the passage we can draw a conclusion that if we want to keep healthy, we should        .

A. only eat an apple a day  

B. take as many vitamin pills as possible

C. eat properly    

D. throw something into our stomachs slowly and carefully.

男性，15岁，学生。自幼活动多，会从摇篮或小车里向外爬。稍大时，看书看不了几页就把书扔掉，经常把自己卧室搞得乱七八糟。上小学以后，上课时小动作不停，喜欢插嘴，干扰老师讲课，扰乱课堂秩序，经常被请家长也无济于事。喜欢招惹别人，常与同学发生争吵或打架。六年级以来更为明显，常无故旷课，与社会上的"小混混"欺负低年级的同学，向他们要钱，不给则拳打脚踢，向家长说谎，偷家长或骗亲人的钱物。入初中后变本加厉，并与个别女同学厮混在一起，家长无法管理送其来院。

若该患儿诊断为多动综合征合并品行障碍，那么关于多动障碍的病因说法正确的是（）

A.具有家族聚集现象

B.患者血和尿中多巴胺和去甲肾上腺素功能低下

C.5-HT功能低下

D.头发中锌含量升高

E.血铅水平降低

F.脑电图慢波增多，快波减少

（）应每月测1次。

A、站场绝缘

B、阴极电位

C、沿线保护电位

D、管道防腐层

下列车船可以免征车船税（）。

A、非机动车船（不包括非机动驳船）、拖拉机

B、工程专用车船

C、捕捞、养殖渔船

D、军队、武警专用的车船、警用车船