问题 问答题

如图是火警自动报警装置的简单电路.其中,温控开关S在温度升高到某一设定值时自动闭合,常温时自动断开.当温度升高到某值时,开关S闭合,电磁铁______磁性(填:“产生”或“失去”),吸引衔铁,触点______(填:“b”或“c”)接通,______ 灯发光报警(填:“红”或“绿”).

答案

读图可知,当S闭合时,电磁铁接入电路,产生磁性,吸引衔铁,使b触点接通,红灯发光且电铃报警.

故答案为:产生,b,红.

阅读理解

This is not a diet. It's a simple way to lose weight~ And you don' t even have to give up the food you love or join a gym. You just follow some habits that thin people have. Keep them, and you'll become thin.

( 1 ) Wake - up

When you wake up in the morning, sit up slowly without using your hands. With legs straight out, bend( 弯曲) forward until you feel sore in your back. It will burn about 10 calories (热量单位,卡路里).

(2) Start with soup

When you have a meal, order a clear soup, and have it before having the main food. In this way, you'll feel fuller, so you'll eat less when the main food comes.

(3) An apple (or more) a day

Apples are full of fiber(纤维) and water, so your stomach will want less. The study shows that people who eat at least three, apples a day lose weight.

(4) Stand up and walk around

Every time you use the mobile phone, stand up and walk around.  Heavy people sit on average(平均) two and a half hours more each day than thin people. This skill is very important as standing up and walking around will burn 50 or more calories.

Use these skills, and you will have a big weight loss.

小题1:What should we have first if we want to eat less main food?

A.Soup.

B.Ice cream.

C.Salad.

D.Cheese.小题2:Why does eating apples make one's stomach want less food?

A.Because apples are delicious.

B.Because apples are full of fiber and water.

C.Because apples are sour.

D.Because only apples are filled with calories.小题3:Which of the following may the author disagree?

A.Sitting up slowly without using your hands helps burn calories.

B.Eating apples every day is good for people's health.

C.You have to join a gym if you want to lose weight.

D.It' s good to walk around while talking on the mobile phone.小题4:What's the purpose of the passage?

A.To give some advice on how to lose weight.

B.To advise people to eat apples every day.

C.To tell people how to enjoy a better life.

D.To advise people to give up bad habits.小题5:In which part of a newspaper would you most probably read the passage?

A.Shopping.

B.Teaching.

C.Family.

D.Health.

单项选择题