问题 选择题

下列产品的开发利用与环境保护无关的是(  )

A.加碘食盐

B.无磷洗衣粉

C.无铅汽油

D.无氟冰箱

答案

A、加碘食盐是为了给人体补充碘元素,与环境问题无关,故A正确;

B、含磷洗衣粉能使水体富营养化造成赤潮和水华现象,污染了水源,故B错误;

C、含铅汽油容易引起重金属污染,能污染空气,故C错误;

D、含氟冰箱能破坏臭氧层,引起臭氧层空洞,所以也破坏了环境,故D错误.

故选A.

判断题
阅读理解

According to a new survey, students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery on the way to and from school. Now in main big cities in China , some schools have taught an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.

Chen Haoyu, a teacher at Beijing No. 25 Middle School, gives young students advice on how to deal with danger.

If you are robbed

Keep calm. lf you can not cry for help or run away. Give the robber your money. Try to remember what the robber looks like and tell the police later.

If you are in a traffic accident

If a car hits you. You should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. This is because you don't know how seriously you are hurt

If it is raining hard and there is lighting

Don’t stay in high places and stay away from trees.

When there is a fire

Get away as fast as yon can. Put wet things on your body and try to find an exit. Do not take the lift.

If someone is drowning

If you can’t swim, don’t get into the water. Cry out for help.

Remember that danger is never as far away as you think. Take care of yourself at all time!

小题1: Why do students like the self-protection lesson?

①Because there are no tests.

②Because the lessons are boring

③Because they can learn how to save lives.

④Because they can know how to stop danger before it happens.

A.①②

B.②③

C.①②④

D.①③④小题2: What will you do if a bicycle hurts you?

A.I will remember the bicycle number.

B.I won't let the rider go until I call my parents.

C.I will let the rider go before I call my parents.

D.I will let the rider go because I know how seriously I am hurt.小题3: lf your house is on fire, you must__________.

A.put dry things on your body

B.run quickly and take the lift

C.run away and find an exit as quickly as you can

D.take everything you have and then run away小题4:  There are ________ways of self-protection mentioned in the passage.

A.3

B.4

C.5

D.6小题5: The best title for this passage is _________.

A.How to Keep Calm

B.Self-protection

C.An usual lesson

D.Danger