题目内容
. _______ as much memory work as possible is fundamental to ______ our English.
A. Doing, improving B. To do, improve C. Do, improving D. Doing, improve
A
心算口算巧算一课一练系列答案
应用题作业本系列答案 I can still remember when I met my best friend．She had just moved into the neighborhood and her grandmother brought her down to 11 me．I hid behind my mother and she hid behind her grandmother， 12 to look at each other．Soon we lost the 13 and started playing with each other．
In the 7th grade，I first lost touch with her．She was 14 family problems and I deserted her to be with the "cooler people" because they knew she had been a 15 person．None of my new friends liked her as much as I did because they knew she had 16 ．However，every summer we could always sit at each other’s house and watch soap operas，and talk about all the boys we liked．
It was last year when I noticed the problem．I guess I was too devoted in high school to 17 she needed someone there for her．Anyway，she made a new best friend and so did I．Then 1 didn’t know why，but she started cutting herself!
She then was diagnosed（诊断）with clinical（临床的）depression．At first，1 was very 18 ，but we still stayed in 19 ．I wanted to be there for her since her new best friend basically 20 her and people were calling her 21 ，and I knew I still cared about her like a sister.
Yesterday she came to me and said：“I never knew what a best friend was until you were the only person that would stop me cutting．I 22 you so much，and you didn’t even know you were 23 me．”
We both cried．And I guess a kind of 24 from my life so far is never to give up on your friends．Even if they aren’t as cool as others，or people think they are crazy，they need someone there．If you desert them，you will only be 25 yourself. So if a friend needs you, and you care for them, you can never desert them.
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What is time? Is it a thing to be saved or spent or wasted, like money? Or is it something we have no control over, like the weather? Is time the same all over the world?
That's an easy question, you say. Wherever you go, a minute is 60 seconds, an hour is 60 minutes, a day is 24 hours, and so forth. But in America, time is more than that. Americans see time as a valuable resource. Maybe that's why they are fond of the expression, "Time is money."
Because Americans believe time is a limited resource, they try to conserve and manage it. People in the U.S. often attend seminars or read books on time management. It seems they all want to organize their time better. Professionals carry around pocket planners -- some in electronic form -- to keep track of appointments and deadlines. People do all they can to squeeze more time out of their time. The early American hero Benjamin Franklin expressed this view best: "Do you love life? Then do not waste time, for that is the stuff life is made of."
To Americans, punctuality is a way of showing respect for other people's time. Being more than 10 minutes late to an appointment usually calls for an apology and an explanation. People who are running late often call ahead to let others know of the delay. Of course, the less formal the situation is, the less important it is to be exactly on time. At informal get-togethers, for example, people often arrive as much as 30 minutes past the appointed time.
To outsiders, Americans seem tied to the clock. People in other cultures value relationships more than schedules. In these societies, people don't try to control time, but to experience it. Even Americans would admit that no one can master time. Time -- like money -- slips all too easily through our fingers. And time -- like the weather-- is very hard to predict. Nevertheless, time is one of life's most precious gifts. And unwrapping it is half the fun.
【小题1】What’s the main topic of this passage?
| A．What is time? |
| B．How to control time? |
| C．Make good use of time. |
| D．Time among Americans. |
| A．protect | B．develop | C．produce | D．assist |
| A．Americans often carry a clock with them. |
| B．Americans can not predict the time. |
| C．Americans can take control over time. |
| D．Americans often make full use of time. |
| A．Americans have more time than others. |
| B．by using pocket planners, people can have more time. |
| C．for informal meeting, Americans often arrive 30 minutes earlier. |
| D．Americans often attend seminars, because they want to use time better. |
Younger adults who get either little sleep or a lot of it may see a greater expansion in their waistlines（腰围）over time, a study published suggests. Researchers found that among black and Hispanic adults younger than 40, those who typically slept for five hours or less each night had a greater accumulation of belly fat over the next five years, versus
（相比于） those who averaged six or seven hours. Those who slept eight hours or more in bed each night also showed a bigger fat gain - but it was less obvious than that seen in "short sleepers."
The study, reported in the Journal Sleep, does not prove that too little or too much sleep directly leads to excess fat gain. But the findings support and extend those of other studies linking sleep duration - particularly a lack of sleep - to weight gain and even to higher risks of diabetes(糖尿病) and heart disease. Among participants younger than 40, the study found, those who said they slept for five hours or less each night gained more belly fat than those who averaged six or seven hours of sleep. On average, short sleepers showed a 32 percent gain in visceral（内脏的）fat, versus a 13 percent gain among those who slept six or seven hours per night, and a 22 percent increase among men and women who got at least eight hours of sleep each night. A similar pattern was seen with superficial abdominal（腹部）fat.
The findings, according to lead researcher Dr. Kristen G. Hairston, support the belief that sleep habits affect weight and health in general. "Sleep is an important part of your overall health - not just in whether you're tired during the day," she said.
There may be indirect effects; people who get too little sleep may be too tired during the day to exercise, while those who spend a lot of time in bed may spend less time being active, relative to people who sleep fewer hours. Research also suggests that sleep loss alters people's levels of appetite-regulating hormones（荷尔蒙）- which could, in theory, cause them to overeat. Depression, which often affects people's sleep and has been linked to weight gain, could also be a factor, Hairston noted.
【小题1】Who may have the higher risk of being fat over the next five years?
| A．Jack, a Hispanic man, aged 35, sleeps for 3 hours every night. |
| B．Candy, a black woman, aged 41, sleeps for about 5 hours every night. |
| C．Bob, an American, aged 50, sleeps for more than 12 hours every day. |
| D．John, a student in Africa, sleeps for more than 6 hours every week. |
| A．Too little or too much sleep directly gives rise to the fat gain. |
| B．People are subject to heart disease due to the lack of sleep. |
| C．It is admitted that sleep plays an important part in our health. |
| D．Researchers find a longer sleep time is better for our health. |
| A．People should do some exercise in their daily life. |
| B．There is a close link between sleep habits and health. |
| C．More nutrition is greatly needed when we lack sleep. |
| D．More and more people tend to sleep less than before. |
| A．Younger adults getting little or much sleep may become fat. |
B．We are supposed to do exercise as much as possible to ke ep fit. |
| C．We should keep a good sleep habit to improve our health. |
| D．We have to spare no efforts to drive depression away. |
| A．Sleep Habits Linked to Fat Gain in Younger Adults. |
| B．Doing Exercise Is the Best Way to Keep Fit. |
| C．Our Waistlines Can Be Driven Away Right Now. |
| D．Diabetes No Longer bother all of Young People. |
Online shoppers would rather receive an offer for a product or service than make their own offer 3 according to a study led by a Michigan State University scholar that has implications for the fast-growing e-commerce industry. The findings may come as a surprise given that shopping online is an anonymous(匿名的）process that seemingly can give consumers more confidence to drive a hard bargain,said Don Conlon ，Professor of Management in MSU’s Broad College of Business.
But the study found that participants who made their own offers were less successful in sealing the deal and ，when they were successful? worried they overpaid Many shoppers found the process of researching an offer to be a hassle. “ Americans are very busy，and it’s less time-consuming to be the one receiving the offer rather than the one proposing the offer ” Conlon said. u People tend to be happier when they’re in the receiver role. ”
Online spending in the United States is expected to jump 45 percent in the next four years， from $ 226 billion this year to $ 327 billion in 2017，according to Forrester Research Inc. Nevertheless, researches into this prosperous market remain largely focused on the strategies of companies, rather than those o£ shoppers. Conlon’s study is ，obviously, a rare exception.
Conlon got the idea for the study after considering the difference between two popular sites for hotels and airline flights, priceline.com, which takes bids, and hotwire.com ，which provides offers. Using these two models ，Conlon and his fellow researchers conducted a series of experiments with more than 850 people who were charged with booking a fictional hotel room and acquiring a fictional antique car. Not only did participants prefer to receive bids, Conlon said ，but they also secured more deals in that receiver role. Further ，when they had to make the bids ，they were left more mentally taxed and regretful.
From an industry perspective，putting customers in the receiver role may help fill more hotel rooms and airplane seats. “If you’re a business with a lot of products3 ” Conlon said，“you may want to be the one making the offers. ” However, when selling single items, such as an antique car， accepting bids may be a better option since that typically drives up the price, he said.
【小题1】What can we learn from Para. 1?
| A．The result of the study gives customers more confidence. |
| B．Scholars aren’t surprised at the findings of the study. |
| C．Online shoppers don’t bargain as much as expected. |
| D．E-commerce industry drives more hard bargains. |
| A．online shopping is time-consuming |
| B．given prices help promote online sales |
| C．online businesses provide a lot of products |
| D．receiving offers makes online shoppers regretful |
| A．burdened | B．numbed | C．relieved | D．challenged |
| A．the big advantages of online shopping |
| B．the rapid development of online shopping |
| C．online shoppers’ preference for taking offers |
| D．online companies strategies to improve service |