there is 70% of??water on the planet, only about 1...

第1题

Section CAbout 70% of the earth's surface is covered with water, but only a little percent

Section C

About 70% of the earth's surface is covered with water, but only a little percentage of water is 【11】______. Life on the earth entirely depends on water. It is a fact that man can live without food for days, but without water he will【12】______die soon.

Water serves us in so many useful ways. The rivers, lakes and seas provide much of our food such as fish and prawns. Men have built boats and ships to enable them to travel on water. Today cargo and 【13】______ships can travel around the world.

In【14】______parts of the world where there is not much rain. Water is led from rivers and lakes to water crops. In many parts of these dry regions,【15】______is difficult unless there is enough water.

But too much water in the form. of floods can bring disaster to man. Floods, which result from heavy rains, are very common in many parts of the world. Each year thousands of people die and huge damage is done by floodwaters.

【11】

A．drinking

B．drinkable

C．drinker

D．drunk

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第2题

Section BDirections: In this section, you will hear 3 short passages. At the end of each p

Section B

Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.

听力原文： Billy is fourteen years old and in the ninth grade. He has a part-time job which gets him up every morning at five o'clock. He is a newspaper boy. Each morning, Billy leaves the house at 5:15 to go to the corner where the newspapers are. The newspapers were delivered to the corner by the truck at midnight. He always takes a wagon to carry them. In the winter, it is still dark when he gets up, but during the rest of the year it is light. Billy must deliver the newspapers to the houses of people on his route in all kinds of weather. He tries to put each paper on the porch where it will be protected from wind and rain or snow. His customers think he does a good job. Sometimes they give him extra money. Billy earns about $ 70 per month, and he is saving some of the money to go to college. He spends the rest on records and clothes. Sometimes, when Billy is sick, his elder brother has to deliver the newspapers. Once Billy's father had to help. Bill has seventy customers now, but he hopes to get more soon. If he gets more customers, Billy might win a prize for being an outstanding newspaper boy. He wants to win the trip to Europe, but he will be happy if he wins a new bicycle.

(16)

A．He is a college student.

B．He is fourteen-year-old boy.

C．He is a newspaperman.

D．He is a truck driver as well as a newspaperman.

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第3题

Section ADirections: This section is to test your ability to understand short dialogues. T

Section A

Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and the questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices A , B, C, and D.

听力原文：M: I think the film starts at eight.

W: Good, we have an hour to get them.

Q: What time is it now？

(1)

A．Seven o' clock.

B．Eight o'clock.

C．Nine o' clock.

D．Seven thirty.

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第4题

If you don't understand a section of mathematics text, ______.A．it is no use going on to o

If you don't understand a section of mathematics text, ______.

A．it is no use going on to other subjects

B．it is no use going on to the next section

C．you can not go on studying physics

D．you can go on studying chemistry

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第5题

SECTION CNEWS BROADCASTIn this section,you will hear several news items.Listen to them car

SECTION CNEWS BROADCAST

In this section,you will hear several news items.Listen to them carefully and then answer the questions that follow.

Questions 21 and 22 are based on the following news. At the end o f the news item,you will be given 10 seconds to answer the questions.

Now, listen to the news.

The Dow closed down at

[A] 180 point 2.

[B] 3,805.

[C] 5,549.

[D] 50 point 1.

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第6题

Section ADirections: In this section, you will hear 8 short conversations and 2 long conve

Section A

Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.

听力原文：M: When does the next bus leave for New York？

W: Buses leave for New York every half-hour. You just missed the nine-thirty bus by five-minutes.

Q: When will the next bus leave for New York？

(12)

A．Ten o'clock

B．Nine thirty.

C．Nine o'clock.

D．Five o'clock.

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第7题

Section ADirections: This section is to test your ability to give proper answers to questi

Section A

Directions: This section is to test your ability to give proper answers to questions. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D.

(1)

A．At 7 o'clock.

B．Not bad.

C．A piece pf cake.

D．Five dollars.

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第8题

Section ADirections: In this section you will hear 10 short conversations. At the end of e

Section A

Directions: In this section you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. The conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center.

听力原文：W: I'm here for my nine o'clock appointment with Dr. Milton.

M: Why don't you have a seat for a moment？

Q: What does the man ask the woman to do？

(1)

A．To take a seat and wait.

B．To go there at nine o'clock.

C．To tell him why she wants to see Dr. Milton.

D．To make another appointment with Dr. Milton.

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第9题

假设当前处于非抢占调度策略，进程只有两种方式可以放弃CPU，一个是主动调用系统调度函数sysnc（)，

假设当前处于非抢占调度策略，进程只有两种方式可以放弃CPU，一个是主动调用系统调度函数sysnc()，此时进程主动放弃CPU；另一个方式是当进程执行I／O操作时，系统将调度下一个进程。试分析如下三种进程对，何时会出现不符合下列原则，并说明原因： 1)空闲则人；2)有限等待；3)保证互斥。第一种： Threadl(){ sysnc()；—— ——critical section—— g=g+b； f=g—a； //临界区不能被打断 ——critical section—— } Thread2(){ ——critical section—— g=g+b； f=g—a； ——critical section—— } 第二种 Threadl(){ sysnc()； ——critical section—— g=g+b； f=g—a； ——criticaI section—— } Thread2(){ ——critical section—— g=g+b； f=g—a； ——critical section—— sysnc()； } 第三种； Threadl(){ sysnc()； ——critical section—— g=g+b； fstring=printf(…)；／／调用I／O； f=g—a； ——critical section—— } Thread2(){ Sysnc() ——critical section—— g=g+b； f=g—a； ——critical section—— sysnc()； }

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第10题

Section ADirections: In this section, you will hear 8 short conversations and 2 long conve

Section A

Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.

听力原文：M: I can come to your house and pick you up in half an hour. Is that all right？

W: Good. That means you'll be here at seven-thirty.

Q: What time is it now？

(12)

A．Seven-thirty.

B．Eight o'clock.

C．Seven o'clock.

D．Six-thirty.

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