题目内容

5. 两年前公司给了她出国学习的机会，对此她非常感激。

5. She appreciated much being offered/given the opportunity by the company to study abroad two years ago.

练习册系列答案
相关题目

 [2015河南洛阳第二次统一检测] It is 7 am and the alarm is going off. You know you have to be out of bed to catch the bus. But the urge to bury yourself in the bed is ever so strong. Sounds familiar? Why is it that teens find it difficult to get themselves out of bed in time every morning or stay sharp and focused during the first couple of hours of school?

During adolescence,the body goes through many changes and this includes a shift in sleep patterns. Re?searchers from MIT have been tracking the body's need for sleep in teenagers. They found that though adolescents need as much as 9. 5 hours of sleep a day,they get to bed later and later with each passing year. In fact,the sleep cycle shifts later by as much as 12  to 18 minutes each year between the ages of 10 and 20!So by the time a 10-year-old child who sleeps at 8 pm grows to be 17 or 18,his body naturally wants to stay up till 10:30 or 11pm.

 According to researchers,this is because of a hor?mone called melatonin (褪黑激素) that is secreted (分泌) by the pineal gland—a tiny structure deep inside the brain. Melatonin regulates the body's natural day-night rhythms. It causes a person to become sleepy by lowering their body's core temperature. In teens， melatonin is se?creted much later in the evening and continues to increase throughout the night. This makes it difficult for teens to fall asleep earlier as they did in their younger years. Like-wise,the effect of melatonin continues until much later in the morning,making it hard for them to wake up early.

  A study found that at least one in four teens is tired and falls asleep in school at least once a week. During sleep,important body functions and brain activities hap?pen. So how can teenagers get their sleep enough? The A-merican Association of Pediatrics (AAP) recommends that middle and high schools should start later―not before 8:30 am. This should give teens some more time to sleep at night.

20. From Paragraph 2,we can learn that if you sleep late,the next day you should .

   A. stay sharp   B. skip breakfast

   C. get up late   D. stay up late 

21.What does the underlined word "this" in Paragraph 3  refer to?

   A. The students want to stay up.

   B. The shifts of sleeping cycle.

   C. The pineal gland secrets melatonin.

   D. The adolescents sleep late.

22. The teens go to sleep later than before because       .

   A. melatonin is secreted much later

   B. melatonin regulates the sleep time

   C. they sleep a lot in the daytime

   D. they need to finish their homework 

23. According to AAP's recommendation,middle and high schools should       .

   A. let teens sleep in the day

   B. let the students be active

   C. delay the start time

   D. start later at 8:00 am

9. This kind of submarine can dive to the        (deep) of 3,000 metres under the sea.

8. The bridge        (build) now will be completed in two weeks.

5. 有人请她表演一个节目，她不好意思拒绝。

      to give a performance,she couldn't very well refuse.


2. Why do you put the blame on others? Why don't you r        on your own actions?

9. The foundation of the building is so        (浅的) that no more storeys can be added.

1. 但与此同时，石油工业所带来的环境污染也口益严重。                    But      ,the environmental pollution brought by gas industry is also increasing.

4. 不知不觉中我们就要毕业了。

We will graduate         . (before+从句)

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网