Germs(細(xì)菌) are everywhere. You can’t see them, but they are on your desk, on your computer, and even in the air!

Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.

Warmer Weather Brings Germs

The world’s weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes(蚊子), carry dangerous germs. These germs cause headaches(頭疼), fever, and can even kill people.

Under Your Skin

Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too, they enter(進(jìn)入) your body when you touch your eyes, nose, or mouse.

Fighting Germs

Your immune system(免疫系統(tǒng)) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(細(xì)胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies. Antibodies help your body find and stop germs.

What can you do to fight germs? You should wash your hands with soap(肥皂) and water. Soap kills many germs, and water washes them away.

1.According to the text, insects ___________.

A．kill germs

B．carry germs

C．protect germs

D．love germs

2.The underlined word “there” refers to _______.

A．cooler countries

B．hot countries

C．everywhere

D．the world

3.What do antibodies do?   

A．They kill germs and wash them away.

B．They find and develop germs.

C．They help protect us from germs.

D．They carry dangerous germs.

4.Which can be the best title for this text?  

A．Germs Are Everywhere

B．Weather Is Changing

C．Skin Stops Germs

D．Germs Are Developed

 

【答案】

1.B

2.A

3.C

4.A

【解析】

1.根據(jù)文章內(nèi)容Some of these insects, like mosquitoes(蚊子), carry dangerous germs.可知答案為B

2.根據(jù)文章內(nèi)容Cooler countries are getting warmer, so insects from hot countries can move there.可知答案為A

3.根據(jù)文章內(nèi)容Other cells make antibodies. Antibodies help your body find and stop germs可知答案為C

4.根據(jù)文章內(nèi)容大意可知答案為A

 

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