6.It is advised that technology be used to prevent people from overworking.

A．To restore our atmosphere.

B．To stop refrigerator-use.

C．To prevent people from killing insects.

D．To restrict the use of some pollutants that harm the ozone layer.

What does this text try to show?

A．How to prevent people from heart disease.

B．How to deal with stressful conditions.

C．Relaxation is good for our health.

D．Behavioral patterns and healthy problems.

You can use this product to prevent people from falling over loose wires or accidentally pulling them out.

What is the purpose of Bill Smith's AIDS foundation?

A．To prevent people from contracting and spreading AIDS.

B．To carry out research on how to prevent the spread of AIDS.

C．To keep up with the rate of the epidemic growing.

D．To promote AIDS awareness and prevention.

The purpose of the latest recycling project is______.

A．to prevent people from putting rubbish into holes

B．to find a way of destroying all kinds of waste

C．to extract useful raw materials from the waste

D．to find out how much raw materials could be provided

The smoke-tree buffer zone adopted by many colleges and universities is mainly used to prevent people from__________.

Another effective measure suggested against accidents is______.

A．to issue license

B．to prevent beginners from driving boats

C．to keep offenders off the water

D．to prevent people from riding boats in bad weather

【题目描述】

Section A

Directions: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item with a single line through the center. You may not use any of the words in the bank more than once.

  Smugglers try to bring illegal items into the United States every day. People who travel to foreign countries sometimes try to avoid paying duty taxes on items they (47)______ on vacation. Some people try to enter our country (48)______. Who prevents these things from happening? This is the job of U.S. Customs Inspectors

  Customs officials work at (49)______ points to America. This includes airports, seaports, and our borders with Mexico and Canada. They work to prevent people from illegally entering America from, (50)______ countries and inspect items brought into the United States. They also work to prevent illegal drugs and (51)______ from coming to America. Inspectors must be very (52)______. Many tricks are used to smuggle both people and items into our country.

  American citizens who travel to other Countries also (53)______ customs officials. When people travel, they may purchase items to bring home. This merchandise must be (54)______. Customs officials inspect items and receipts to assess a duty tax. A person may bring eight hundred dollar worth of merchandise into America without paying a duty tax. Some people try to hide expensive items to avoid paying this tax. Sometimes people try to bring banned items to the U.S. Our laws (55)______ certain types of plants, foods, animals, and products from coming into our country. These laws are for our (56)______. Plants and foods may carry harmful insects or diseases. Customs officials check carefully to make sure proper taxes are paid and banned items do not come into our country.

        Word Bank:

A. encounter         I. entry

B. protection         J. terrorists

C. dangerous         K. honest

D. observant         L. foreign

E. illegally         M. prohibit

F. environment        N. freely

G. purchase          O. declared

H. protected

【我提交的答案】：

【参考答案分析】：

G 解析：从句法结构看，该题应填入一个动词，其时态须是一般现在时，选项中符合这一要求的单词有A. encounter、G. purchase和M. prohibit。从句意看，该句表达那些到国外旅游的度假者有时竭力逃避对他们所携带的物品征收的关税，选项中能顺应这一句意的单，词只有“purchase”，表示“购买”。

答案。。。。不全