1、re considered dynamic if you say you only need 5.5 hours sleep. If youre got to get 8.5 hours, people think you lack drive and ambition.”To determine the consequences of sleep deficit, researchers have put subjects through a set of psychological and performance tests requiring them, for instance, to
2、 add columns of numbers or recall a passage read to them only minutes earlier. “Weve found that if youre in sleep deficit, performance suffers,” says Dr. David. “Short-term memory is weakened, as are abilities to make decisions and to concentrate.”31.People in the 18th and 19th centuries used to sle
3、ep about 9.5 hours a night because they had _.A) no drive and ambitionB) no electric lightingC) the best sleep habitsD) nothing to do in the evening（B）32.According to Dr. David, Americans _.A) are ideally vigorous even under the pressure of lifeB) often neglect the consequences of sleep deficitC) do
4、 not know how to relax themselves properlyD) can get by on 6.5 hours of sleep（B）33.Many Americans believe that _.A) sleep is the first thing that can be sacrificed when one is busyB) they need more sleep to cope with the complexities of everyday lifeC) to sleep is something one can do at any time of
5、 the dayD) enough sleep promotes peoples drive and ambition（A）34.The word “subjects” (Line 1, Para. 4) refers to _.A) the performance tests used in the study of sleep deficitB) special branches of knowledge that are being studiedC) people whose behavior or reactions are being studiedD) the psycholog
6、ical consequences of sleep deficit（C）35.It can be concluded from the passage that one should sleep as many hours as is necessary to _.A) improve ones memory dramaticallyB) be considered dynamic by other peopleC) maintain ones daily scheduleD) feel energetic and perform adequately（D）Questions 36 to 4
7、0 are based on the following passage.The concept of personal choice in relation to health behaviors is an important one. An estimated 90 percent of all illness may be preventable if individuals would make sound personal health choices based upon current medical knowledge. We all enjoy our freedom of
8、 choice and do not like to see it restricted when it is within the legal and moral boundaries of society. The structure of American society allows us to make almost all our own personal decisions that may concern our health. If we so desire, we can smoke, drink excessively, refuse to wear seat belts
9、, eat whatever food we want, and live a completely sedentary life-style without any exercise. The freedom to make such personal decisions is a fundamental aspect of our society, although the wisdom of these decisions can be questioned. Personal choices relative to health often cause a difficulty. As
10、 one example, a teenager may know the facts relative to smoking cigarettes and health but may be pressured by friends into believing it itoes are a staple of local diets,the insects effects are devastating. Retail prices for a30 of tomatoes at local markets have risen from $0. 50 to $2.50. Farmers a
11、re reporting steep losses and a new $20 million tomato-paste factory has31 production due to the shortages.Given the moths ability also to attack crops like pepper and potatoes, Audu Ogbeh, Nigerias minister of agriculture, has warned that the pest maycreate serious problems for food32 in the countr
12、y.Ogbeh says experts are investigating how to control the pests damage and prevent its spread, which has gone largely33 until now.Despite being the continents second-largest producer of tomatoes, Nigeria is34 on $1 billion worth of tomato-paste imports every year.as around 75% of the local harvest g
13、oes to waste thanks to a lack of proper storage facilities. A further35 in local supplies is yet another unwelcome setback to the industry.A)dependent I）originatedB)Embarking J) reductionC)emergenc K) reproducesD)feeding L）securityE)grazes M）terrorF)halted N) uncheckedG)handful O）uncheckedH)multitud
14、eSection BDirections: In this section, you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is ma
15、rked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.whos really addicting you to Technology?A.Nearly everyone i know is addicted in some measure to the internet, wrote tony Schwartz in The New York Times. its a common complaint these days. A steady stream o
16、f similar headlines accuse the net and its offspring apps, social media sites and online games of addicting us to distractionB. Theres little doubt that nearly everyone who comes in contact with the net has difficulty concentration than it takes to post a status update. as one person ironically put
17、it in the comments section of Schwartzs online article, As I was reading this very excellent article.I stopped at least half a dozen times to cheek my email.C.Theres something different about this technology: it is both invasive and persuasive. but whos at fault for its overuse？ To find solutions, its important to understand what were dealing with.There are four parties conspiring to keep you connected the tech, your boss, your friends and you.D.The technologies themselves and their makers, are the easiest suspects to blame for our dimin
