Jack felt nervous when he found the phys

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问题选择题

Jack felt nervous when he found the physics problems ____ to work out.

A．easy enough

B．too easy

C．too difficult

D．difficult enough

答案

答案：C

题目分析：easy enough足够容易；too easy太容易； too difficult太难；difficult enough足够难。句意：当他发现解决这道物理题太难时，杰克感到很紧张。短语too adj to do sth做某事太……。故选C。

点评：词义辨析考的是学生的基础词汇知识，了解每个选项的含义是做好此类题型的关键，需要注意的就是其一词多义现象及所修饰对象的不同，然后结合上下文语境选择合适答案。考点：

点评：固定句式的考查也是英语考查的一个重点，熟记这些句式可以减少答题中的分析判断时间，所以平时加强句式记忆也是学好英语的关键环节。

阅读理解

Judging from recent surveys, most experts in sleep behaviour agree that there is an epidemic (流行病) of sleepiness in the nation. “I can’t think of a single study that hasn’t found Americans getting less sleep

than they ought to,” says Dr. David. Even people who think they are sleeping enough would probably be

better off with more rest.

The beginning of our sleep-lack crises can be traced back to the invention of the light bulb a century

ago. From diary entries and our personal accounts from the 18th and 19th centuries, sleep scientists have

reached the conclusion that the average person used to sleep about 9.5 hours a night. “The best sleep

habits once were forced on us, when we had nothing to do in the evening on the farm, and it was dark.” By the 1950s and 1960s, the sleep schedule had been reduced dramatically, to between 7.5 and 8 hours, and most people had to wake to an alarm clock. “People cheat in their sleep, and they don’t even realize

they’re doing it,” says Dr. David. “They think they’re okay because they can manage with 6.5 hours, when they really need 7.5, 8 or even more to feel ideally energetic.”

Perhaps the most cruel robber of sleep, researches say, is the complexity of the day. Whenever

pressures from work, family, friends and community increase, many people consider sleep the least

expensive item on their programme. “In our society, you’re considered energetic if you say you need only 5.5 hours’ sleep. If you have to get 8.5 hours, people think you lack drive and ambition.”

To determine the consequences of sleep-lack, researchers have put subjects through a set of

psychological and performance tests requiring them, for instance, to add columns of numbers or recall a

passage read to them only minutes earlier. “We’ve found that if you’re lacking in sleep, performance

suffers,” says Dr. David. “Short-term memory is weakened, so are abilities to make decisions and to

concentrate.”

1. What is the main topic of the passage?

A. Research on the causes and consequences of sleep-lack.

B. The epidemic of sleepiness in the modern times.

C. The history of people’s sleeping patterns.

D. The minimum of our sleeping hours.

2. Which of the following is Dr. David’s opinion?

A. People who think they are sleeping enough are better off than those who don’t.