题目内容
Stay awake! You should know that it ________ to sleep in class.
| A．doesn’t permit | B．is not permitted |
| C．will not be permitted | D．was not permitted |
B
解析试题分析：句意：保持清醒，你应该知道在课堂上是不允许睡觉的。这里it是形式主语，to sleep in class是真正的主语，根据Stay awake可知说的现在不能睡觉，所以应该用现在时故选B。
考点：考查动词时态及语态的用法。
点评：本题难度适中。动词时态及语态是高中阶段的重难点之一，高中要求掌握的时态需要考生牢记它们的用法，但是时态必须要结合一定的语境才能做出正确的判断。
即学即练：--- I hear you _______ at Smith’s.
--- Yes, I________there for about three months.
A．work; had been working
B．worked; was working
C．are working; have been working
D．worked; have worked
解析：C。句意：---我听说你在史密斯那里工作。---是的，我一直在那里工作了3个月。
暑假作业海燕出版社系列答案Do you sleep well? Some people get off to sleep as soon as their head hits the pillow, but many others are not so lucky. In fact, the lack of quality sleep has become a public health issue around the world. According to me World Association of Sleep Medicine, 45 percent of the world's population suffer from sleep problems. One in eight people don't sleep well and are easily woken. 7.6 percent sleep less than 3 hours each night. Some even cannot fall asleep for several days in a row.
As a basic bodily and mental need, sleep is essential for our survival, it helps us to fight diseases, strengthen our memory, perform better in work and school and improve our quality of life. Lack of sleep is known to have a significant negative influence on health, both in the short and long term. Poor sleep has been associated with obesity, diabetes, weakened immune systems and even some cancers, as well as depression and anxiety.
The World Sleep Day, held on the third Friday of March, is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders.
To achieve this goal, we must figure out what causes sleepiness and sleeplessness.
Unhealthy lifestyle may be the first to blame. More and more people use cell phones and computers in bed, with many staying up until midnight. Modern technology does make our life convenient, but abuse of it ruins our health. Environmental conditions, such as temperature, noise, light, bed comfort also play an important Pole in one's ability to get proper sleep. Besides, improper evening diet, like a full or an empty stomach, coffee and alcohol all contribute to sleep problems. Of course, when it comes to causing poor sleep, stress from finances, family or work should never be ignored．
However, those who suffer from sleep disorders don't necessarily have to continue to do so -most sleep problems can be managed．
【小题1】What can be inferred from Paragraph 1?
| A．Nobody can stay awake for several days |
| B．Most people are going through sleep problems |
| C．Sleep problems have become a worldwide concern． |
| D．The majority of the world's population can't sleep well． |
| A．Unhealthy lifestyle． | B．Modern technology． |
| C．Environmental conditions． | D．Work stress． |
| A．The harm of sleep problems． |
| B．Activities on the World Sleep Day． |
| C．Interviews of poor sleep sufferers． |
| D．Measures against sleep problems． |
| A．Doubtful． | B．Disapproving． | C．Concerned． | D．Enthusiastic |
Donald had his own difficulties in sleeping that night. Not just because of the bright lights of the shelter or people’s constant voices, it was the happening repeatedly nightmare that caused him to stay awake, to fear sleep. Donald was back in his small house. He did his best to ignore the howling winds outside his window. Yet he could not turn out the fearful whimpers (呜咽) of his little dog, or the uncomfortable sounds of his mother anxious in her room next door, unable to sleep through the storm despite her insistence they would be all right.
Donald did not want his mother to be upset, but on some level, he was glad to hear she was awake, It meant he was not alone in the dark. Though he was 12, until recently it was impossible for Donald to fall asleep unless his mother lay down by his side.
Suddenly there was a crash. Their living room window is shattered (打碎) by 125 miles an hour winds. Troy rushed to Donald and sat anxiously on the edge of his bed. He did his best to calm his mother, and she had to comfort him. Soon water was seeping (渗入) into the single floor house. Quickly it rose from ankle level to leg level. At Donald’s insistence, they pushed their way through the water --- now chest high --- toward the front door. When they fought their way into the living room, water rose to their chins.
It was a struggle for the boy and mother to stay afloat. In a total panic, desperate to hold on to something, Troy caught a curtain rod. She was breathing hard, shouting that she couldn’t swim.
Donald cried out, “Mom! Hold on!” Just then Donald also caught a floatable wood board.
1.The passage is mainly about _____.
|
A．how a storm happened and caused damage |
|
B．how a mother and son experienced a storm |
|
C．how a mother and son survived a storm |
|
D．how a son helped his mother in a storm |
2.Which of the following is NOT mentioned in the story?
|
A．The rising water. |
B．The broken window. |
|
C．The lucky dog. |
D．The noisy environment. |
3.Which phrase can describe Troy’s feelings at the beginning of the storm most suitably?
|
A．In excitement. |
B．In calm. |
C．In anxiety. |
D．In despair. |
4.What will the author most probably talk about next?
|
A．How the other people struggled in the storm. |
|
B．Why the rainstorm happened. |
|
C．What damage the rainstorm caused. |
|
D．How Donald and Troy struggled to save themselves |
How do you feel after you've stayed up late to finish schoolwork? Or the day after a slumber party? Scientists now say that your answers to these questions may depend on your genes.
Genes are stretches of DNA that work like an instruction manual for our cells. Genes tell our bodies and brains what to do. People have about 40,000 genes, and each gene can have different forms. So, for example, certain forms of some genes make your eyes blue. Other versions of those genes make your eyes brown.
In a similar way, new research suggests that a gene called period3 affects how well you function without sleep. The discovery adds to older evidence that period3 helps determine whether you like to stay up late or get up early.
The period3 gene comes in two forms: short and long. Everyone has two copies of the gene. So, you may have two longs, two shorts, or one of each. Your particular combination depends on what your parents passed on to you.
Scientists from the University of Surrey in England studied 24 people who had either two short or two long copies of period3. Study participants had to stay awake for 40 hours straight. Then, they took tests that measured how quickly they pushed a button when numbers flashed on a screen and how well they could remember lists of numbers.
Results showed that the people with the short form of period3 performed much better on these tests than the people with the long form did. In both groups, people performed worst in the early morning. That's the time when truck drivers and other night-shift workers say they have the most trouble concentrating.
After the first round of experiments, participants were finally allowed to sleep. People in the group that performed well on the tests took about 18 minutes to nod off.
People with the long period3 gene, by contrast, fell asleep in just 8 minutes. They also spent more time in deep sleep. That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working at top form.
1.We can know from the passage that genes can not ________.
|
A．tell our bodies and brains what to do |
|
B．make our eyes blue or brown |
|
C．decide how well you work without sleep |
|
D．ensure whether you’re good at driving |
2.Which of the following statements about the period3 is wrong?
|
A．It affects whether you like to stay up late or get up early. |
B．It comes in two forms: short and long. |
C．One has either two longs or two shorts of it. |
D．Your parents determine what particular combination you have. |
3. People with the short form of period3__________.
|
A．need to go to bed early and get up early |
B．can work better than the people with long form of period3 without sleep |
|
C．take less time to fall asleep after they stay up late |
|
|
D．need more and deeper sleep to keep their brains working at top form |
4.What’s the best title of the passage?
|
A．The Period3 Gene |
B．The Function of Genes |
|
C．Wake up, Sleepy Gene |
D．Stay up Late or Get up Early? |