“Must we start the experiment now？” “No, you________.”A.won’tB.needn’tC.can’tD.may not

A．the reason that

B．the reason for why

C．why that

D．why

ns start school in the morning is cruel ," brain doctor claims. So declared a British newspaper headline in 2007 after a talk I gave at an academic conference. One disbelieving reader responded: " This man sounds brain-dead. " B) That was a typical reaction to work I was reporting at the time on teenage sleep patterns and their effect on performance at school. Six years on there is growing acceptance that the structure of the academic day needs to take account of adolescent sleep patterns. The latest school to adopt a later start time is the UCL Academy in London; others are considering following suit. C) So what are the facts about teenage sleep, and how should society adjust to these needs？ The biology of human sleep timing, like that of other mammals, changes as we age. This has been shown in many studies. As adolescence begins, bedtimes and waking times get later. This trend continues until 19.5 years in women and 21 in men. Then it reverses. At 55 we wake at about the time we woke prior to adolescence. On average this is two hours earlier than adolescents. This means that for a teenager, a 7 a.m. alarm call is the equivalent of a 5 a.m. start for a person in their 50s. D) Precisely why this is so is unclear but the shifts related with changes in hormones (荷尔蒙) at adolescence and the decline in those hormones as we age. However, biology is only part of the problem. Additional factors include a more relaxed attitude to bedtimes by parents, a general disregard for the importance of sleep, and access to TVs, DVDs, PCs, gaming devices, cell phones and so on, all of which promote alertness and eat into time available for sleep. E) The amoount of sleep teenagers get varies between countries, geographic region and social class, but all studies show they are going to bed later and not getting as much sleep as they need because of early school starts. F) Mary Carskadon at Brown University in Providence. Rhode Island, who is a pioneer in the area of adolescent sleep, has shown that teenagers need about 9 hours a night to maintain full alertness and academic perforruance. My own recent observations at a UK school in Liverpool suggested many were getting just 5 hours on a school night. Unsurprisingly. teachers reported students dozing in class. G) Evidence that sleep is important is overwhelming. Elegant research has demonstrated its critical role in memory improvement and our ability to generate wise sohitions to complex problems. Sleep disruption may increase the level of the stress. Excited behaviors, lack of empathy, sense of humor and mood are similarly affected. All in all, a tired adolescent is a moody, insensitive, angry and stressed one. Perhaps less obviously, sleep loss is associated with metabolic (新陈代谢的) changes. Long-term lack of sleep might be an important factor for negative conditions such as diabetes (糖尿病), overweight and high blood pressure. H) Adolescents are increasingly using stimulants to compensate for sleep loss, and caf, feinated (含咖啡咽的) and/or sugary drinks are the usual choice. So a caffeinated drink late in the day delays sleep at night. Tiredness also increases the likelihood of taking up smoking. I) In the US, the observation that teenagers have biologically delayed sleep patterns compared to adults prompted several schools to put back the start of the school day. An analysis of the impact by Kyla Wahlstrom at the University of Minnesota found that academic performance was enhanced, as was attendance. Sleeping in class declined, as did self-reported depression. In the UK, Monkseaton High School near Newcastle instituted a 10 am start in 2009 and saw a progress in academic perfomance. J) However, a later start by itself is not enough. Society in general, and teenagers in particular, must start to take sleep seriously. Sleep is not a luxury but a ftmdamental biological need, enhancing creativity, productivity, mood and the ability to interact with others. K) ff you are dependent upon an alarm clock, or parent, to get you out of bed ; if you take a long time to wake up; if you feel sleepy and impatient during the day; ff your behavior. is overly impulsive, it means you are probably not getting enough sleep. Take control. Ensure the bedroom is a place that promotes sleep-dark and not too warm-dont text, use a computer or watch TV for at least half an hour before trying to sleep avoid avoid bright lights. Try not to nap during the day, and seek out natural light in the morning to adjust the body clock and sleep patterns to an earlier time. Avoid caffeinated drinks after lunch. L) It is my strongly held View, based upon the evidence, that the efforts of dedicated (专注的，投入的) teachers and the money spent on school facilities will have a greater impact and education will be more rewarding when, collectively, teenagers, parents, teachers and school governors start to take sleep seriously. In the universal language of school reports: we must do better. In the US and UK, several schools that have delayed the start of the school day witnessed a progress in academic performance.

阅读理解：阅读下面的短文，根据文章内容从A、B、C三个选项中选出一个最佳选项。

The qualities of a good questionnaire

It should be noted that one does not start by {A. writingB、B. writeB、C. wrote} questions. Firstly.we have to decide 'what are the things one needs to know from the respondent in order to meet the survey's objectives？' {A. SecondlyB、B. SecondB、C. Next}，we should decide the target respondents.At the outset, the researcher must define the population about which he/she wishes to generalise from the sample data to be collected.Thirdly,we have to decide the question contents.opening questions should be general and easy to answer so that the respondents have the patience to finish next.and then we can offer some specific questions {A. In order thatB、B. In orderB、C. In order to} get more data from the respondents. {A. In the wordB、B. In a wordB、C. In word}.we couldn’t ignore the physical appearance of our questionnaires.If our questionnaires look like a mess.People would not be willing to {A. helpB、B. helpingB、C. Helpful} us answer our questions....

● The critical path in a schedule network is the path that:

A Takes the longest time to complete

B Must be done before any other tasks

C Allows some flexibility in scheduling a start time.

D Is not affected by schedule slippage

E All of the above.

Eagle has the longest life-span of its species.Eagle can (1)up to 70 years, but to reach age, the eagle must make a hard Decision.

In its 40’s, its long and flexible talons can no longer grab grey which serve as food, its long and sharp beak becomes bent.Its old-aged and heavy wings, due to their thick feathers.become stuck to its chest and make it (2)to fly.Then eagle is left with only two options: die or go through a painful process of change which lasts 150 days for survival

The process requires that eagle fly to a mountain top and sit on its nest"here the eagle knocks its beak (3)a rock until it plucks it out.After plucking it out, eagle will wait for a new beak to grow back.When its new talons grow back, the eagle starts plucking its old-aged features and after five months eagle can take its flight to rebirth and lives for thirty (4) years.

Many times, in order to survive, we have to start a change process.We sometimes need to(5) old memories, habits and other past traditions.Only freed from past burdens, can we take advantage of the present(完型填空)

A.Against

B.Difficult

C.Get rid of

D.Live

E.Mor

mation have nothing to do with it. A merely well-informed man is the most useless【2】on God's earth. What we should【3】at producing is men who【4】both culture and expert knowledge in some special direction. Their expert knowledge will give them the ground to start【5】, and their culture will lead them as【6】as philosophy and as high as【7】. We have to remember that the valuable【8】development is self-development, and that it【9】takes place between the ages of sixteen and thirty. As to training, the most important part is given by mothers before the age of twelve.

In training a child to activity of thought, above all things we must【10】of what I will call "inert ideas" —that is to say, ideas that are merely【11】into the mind without being【12】, or tested, or thrown into fresh combinations. In the history of educaton. the most【13】phenomenon is that schools of learning, which at one epoch are alive with a craze for genius, in a【14】generation exhibit merely pedantry and routine. The reason is that they are overladen with inert ideas. Except at【15】intervals of intellectual motivation, education in the past has been radically【16】with inert ideas. That is the reason why【17】clever women, who have seen much of the world, are in middle life so much the most cultured part of the community. They have been saved from this horrible【18】of inert ideas. Every intellectual revolution which has ever stirred humanity【19】greatness has been a【20】protest against inert ideas.

(1)

A．Chips

B．Scraps

C．Fractions

D．Plates

A.当清算银行一经指定并开始工作，我们就马上开展人民币业务。

B.design

C.designer

D.decide

E.designated

A、pull down

B、slip away

C、fall apart

D、end up

E、stir up

In China， children _______ school at seven.

A、has to start

B、must to start

C、have to start

D、can start