[单项选择]It is only in recent years that man found that the protection of our environment is no small matter to our lives.
A. 只有在近年人们才发现，保护环境对我们的生存至关紧要。
B. 只在前几年人类才发现，环境保护是我们生活中必不可少的。
C. 只有几年人们就会发现，环境保护不过是生活中的一件小事情。
D. 只需要几年人类就会发现，保护环境事情虽小，生活中却不易实现。

[单项选择]It is only recent years that man found that the protection of our environment is no small matter to our fives.
A. 直到近年来人们才发现，保护环境对我们的生存至关重要。
B. 直到近年来人们才发现，环境保护在我们的生活中并不是一件小事。
C. 只需几年人们就会发现，环境保护不过是生活中的一件小事。
D. 直到前几年人们才发现，保护环境在我们的生活中不是一件容易的事情。

[单项选择]In recent years, housework that once depressed many women has been much easier by electrical ______。
A. facilities
B. appliances
C. instruments
D. equipment

[单项选择]Only in recent years have people begun to realize the importance of wildlife protection.
A. 直到近年来人们才越来越意识到保护野生动物的重要性。
B. 只是在最近几年里人们才开始发现并保护了很多重要的野生动物。
C. 直到近年来人们才开始意识到保护野生环境的紧迫性。
D. 直到近年来人们才开始了解保护野生动物的重要性。

[单项选择]Only in recent years ______ begun to realize that wild dogs, kept within bounds, often do more good than harm.
A. people have
B. since people have
C. have people
D. people who have

[单项选择]Only in recent years ________ begun to realize the importance of Internet.
A. people have
B. have people
C. that people have
D. since have people

[单项选择]The compact dictionaries published in recent years are not as {{U}}unwieldy{{/U}} as some of the older editions.
A. complete
B. tiresome
C. reliable
D. cumbersome

[单项选择]Researchers have discovered in recent years that there is a system to the actions almost as consistent and______ as language.
A. comprehensive
B. comprehensible
C. observant
D. conceivable

[单项选择]What has happened to hemp in recent years
A. People have struggled for its legalization.
B. Canadian people have succeeded in legalizing it for fiber.
C. People have tried to make it accepted that hemp is not addictive.
D. Both A and B.

[单项选择]

Text 4
Although, recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing. Consequently, more than 100 cities in the U. S. still have levels of carbon monoxide, particulate matter, and ozone that exceed legally established limits. There is a growing realization that the only effective way to achieve further reduction in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuel such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.
All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline. These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone. The combust
A. countering a flawed argument that dismisses a possible solution to a problem
B. reconciling contradictory points of view about the nature of a problem
C. identifying the strengths of possible solutions to a problem
D. discussing a problem and arguing in favor of one solution to it

[单项选择]Much thought has been given over the recent years to ways of keeping meetings short.
A. 要求约翰对发生过的事情进行解释时，他讲的话让人完全摸不着头脑。
B. 让约翰解释发生过的事情时，约翰完全不知道说什么好。
C. 由于约翰完全不知道发生过什么事，所以他就让别人解释给他听。
D. 约翰自己要求要解释发生过的事情，到头来却又一句话也不肯说。

[单项选择]

Text 4 Although, recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing. Consequently, more than 100 cities in the U. S. still have levels of carbon monoxide, particulate matter, and ozone that exceed legally established limits. There is a growing realization that the only effective way to achieve further reduction in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuel such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol. All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline. These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone. The combustion of larger mo
A. countering a flawed argument that dismisses a possible solution to a problem
B. reconciling contradictory points of view about the nature of a problem
C. identifying the strengths of possible solutions to a problem
D. discussing a problem and arguing in favor of one solution to it