问题 选择题

下列广告语在科学性上有错误的是(  )

A.小儿患佝偻病,应多多补铁

B.请食用加碘食盐,预防大脖子病

C.使用含氟牙膏,可预防龋齿

D.多吃含硒苹果,可预防癌症

答案

A、小儿缺钙易患佝偻病,缺铁易患贫血,所以错误.

B、碘是合成甲状腺激素的主要元素,缺乏易患大脖子病,所以正确.

C、氟能防治龋齿,缺乏易患龋齿,但是不能过量使用,过量会引起氟斑牙和氟骨病,所以正确.

D、硒是一种微量元素,可以预防癌症,正确.

故选A

阅读理解

Happiness is for everyone. You don't need to care about the rich. Though they have beautiful houses with large gardens and swimming pools, they may often feel lonely.

In fact, happiness is always around you if you put your heart into it. When you are in trouble at school, your teachers will help you; when you do something wrong, people around you feel unhappy; when you succeed in something, your friends will say congratulations to you. All these are your happiness. If you notice a bit of them, you can see that happiness is always around you.

Happiness is not the same as money. It is a feeling(感觉) of your heart. Although you are poor, you can also say you are very happy. Money is not everything. You have something else that money can't buy. When you meet with difficulties, you can loudly say you are very happy because you have more chances to challenge(挑战) yourself. So you can not always say you are poor and you have bad luck. If you take every chance you get, you can be a happy and lucky person.

小题1:______may often feel lonely even though they have beautiful houses with large gardens.

A.Teachers

B.Parents

C.Old people

D.Rich people小题2:What will your friends say to you when you make great progress?

A.Congratulations.

B.That's all right.

C.It's very nice of you.

D.Not at all.小题3:When you have more chances to challenge yourself, you may feel_______.

A.proud

B.lonely

C.happy

D.excited小题4:You can make yourself happy by______.

A.making much money

B.taking every chance you have

C.owning beautiful big houses

D.having nice cars小题5:We can learn from the passage that_______.

A.poor people are unhappy because they don't have money to buy big houses

B.we can find happiness around us even if we don't have much money

C.no one will help you if you are poor

D.rich people are very proud because they have big houses and nice cars

判断题