题目内容

【题目】______can I keep the book？ For two weeks.

A. How long

B. How far

C. How often

D. How many

【答案】A

【解析】句意：这本书我可以借多长时间？——两个星期。A How long多长时间，询问时间段；B. How far多远，问距离；C. How often多久一次，询问频率； D. How many多少，询问数量。根据答语可知，答案为A。

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相关题目

【题目】Jim often walks _____ school and walks _____ home every day.

A. to; to B. to; / C. /; to D. /; /

【题目】The boy looked ______ because he didn’t pass his maths exam.

A. sad B. sadness C. saddest D. sadly

【题目】When my friend is in trouble, I always ______to help him.

A. send B. provide C. offer D. catch

【题目】Would you mind _____your radio a little? They're having a meeting in the next room.

—Sorry, I'll do it at once.

A. to turn up B. turning up

C.to turn down D. turning down

【题目】 What do you do if you are in trouble on a lonely island? Surely you need to find a way to get in touch with the outside world. Your best chance of doing this is to draw the attention of a passing plane.

Body signals

Pilots from different countries understand body signals if they have the correct training. When you wave your arms up and down in a straight line, it means “yes”. When you point downwards and swing your arm from side to side, it means “no”. If you want the pilot to know that it's safe to land, push your hands in front of you and bend your knees. If you want to say it's not safe to land, put your arms in the air and move them to one side.

Smoke signals

The smoke from a fire can be seen from far away, so it's a good way to draw attention. If the weather is dry, it isn't hard to start a fire. Remember, however, the fires can be very dangerous if they get out of control. Never light a fire unless you are sure that it can't spread. If the ground is dark, light smoke can be seen more easily. Green grass and leaves produce light smoke.

Ground-to-air signals

It's a good idea to build some signals, too. Use large pieces of wood to make the symbols. If you can't find any wood, use earth. Some useful symbols are：

F“I need food and water.”

II“I need medicine.”

I“I am badly hurt.”

X“I am unable to move from here.”

Pilots' replies

If the pilot lowers the plane's wings from side to side, this means “message received and understood”. (At night, the pilot flashes the plane's green lights.) If the pilot flies the plane in a clockwise (顺时针方向的) circle, this means “message received but not understood”. (At night, the pilot flashes the plane's red lights.)

However, there is no signal which means “message not received”.

【1】Which picture means “it's safe to land”?

A.B.

C.D.

【2】What can you use to build Ground－to－air signals on a lonely island?

A.Wood or earth.B.Grass and leaves.

C.Wood and leaves.D.Sand or grass.

【3】What can we know from the passage?

A.Swinging your arm from side to side means “yes”．

B.Light smoke can be seen easily if the ground is dark.

C.You can make a symbol “I” if you need some medicine.

D.The pilots send out a yellow lights at night.

【4】What is the passage mainly about?

A.The explanation of body signals on an island.

B.The importance of making signals on an island.

C.Ways of living on a lonely island.

D.Ways of sending out signals on a lonely island.

【题目】The foreigners arrived _______ Shanghai _______ that night.

A. at; on B .in; at C .in; on D. at; in

【题目】---Excuse me, may I come in?

---Not yet. Please wait on your chair _______ your name is called.

A. and B. until C. after D. since

【题目】

Germs are very small living things. They are so small that we cannot see them unless we use a microscope. They are found in all kinds of places, all over the world. There are four main types of germs that they can invade (侵入) plants, animals and people, and sometimes they can make us sick.

Bacteria (细菌) live just about everywhere on earth. Not all bacteria are bad. Some of them are good for our bodies. They help us keep things in balance. Good bacteria live in our bodies and help us use the nutrients in the food we eat and make waste from what's left over. We couldn't make the most of a healthy meal without these important helper germs! On the other hand, there are several types of bad bacteria, including those that cause sore throats.

Viruses (病毒) need a host to keep living. They need to be inside a place of a living plant or animal, including humans, or even inside a bacterium! Whatever a virus lives in is called its host. Once a virus finds the perfect host, the goal is to reproduce and spread. Viruses are pretty tricky because they can change quickly to fit a new environment. When viruses get inside people's bodies, they can spread and make people sick.

Fungi (真菌) are kind of like plants. Unlike other plants, fungi cannot make their own food from soil, water, and air. Fungi love warm and wet places. Most fungi are harmless. The kind that can grow on your skin can be treated. It probably won't hurt you. But it really makes you uncomfortable!

Protozoa (原生动物) are extremely small. Most of them live in water. Some protozoa actually eat bacteria and they are good because they also eat the waste of other small living things. Some protozoa are bad, and they live off of other living things, sometimes humans. For example, if a person drinks unclean water, protozoa may cause health problems.

【1】Are germs small?

____________________

【2】How many germs are mentioned in the passage?

____________________

【3】Why can viruses change quickly?

____________________

【4】Where do fungi love to stay?

____________________

【5】What does the passage mainly talk about?

____________________

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