从所给的四个选项中选择最佳答案

Each of the English dictionaries ________ 30 yuan, but we each ________ to buy one.

[　　]

A．costs; have　　　B．cost; have

C．cost; has 　　　 D．costs; has

Most of us seem to reach our peak of alertness (警觉) around noon. Soon after that, alertness declines, and sleepiness may set in by mid-afternoon.

Your short-term memory is best during the morning—in fact, about 15 percent more efficient than at any other time of day. So, students, take notice: when you are faced with a morning exam, it really does pay to review your notes right before the test is given.

However, long-term memory is different. Afternoon is the best time for learning materials that you want to recall days, weeks or months later. Politicians, business executives or others who must learn speeches would be smart to do their memorizing during that time of day. You should try to do most of your studying in the afternoon, rather than late at night. Many students believe they memorize better while burning the midnight oil because their short-term recall is better during the early hours of the morning than in the afternoon. But short-term memory won’t help them much several days later, when they face the exam.

By contrast, we tend to do best on tasks related to the process of knowing, understanding, and learning numbers during the morning hours.

What about sports? During afternoon and early evening, you’re able to react the quickest to an outside stimulus—like a baseball speeding toward you. Studies have also shown that late in the day, when your body temperature is peaking, you will consider PE easier and less tiring—whether it actually is or not. That means you are more likely to work harder during a late afternoon or early evening workout, and therefore benefit more from it.  

In fact, all of your senses—taste, sight, hearing, touch and smell—may be at their keenest during late afternoon and early evening. That could be why dinner usually tastes better to us than breakfast.

While all of us follow the same general pattern of ups and downs, the exact timing varies from person to person. It all depends on how your “biological” day is structured. Each of us can increase our knowledge about our individual rhythms. Learn how to listen to the inner beats of your body; let them set the pace of your day. You will live a healthier and happier life.

1.What does the underlined “it really does pay” mean?

A．It will cost a lot.                         B．It requires price.

C．It is very painful.                        D．It is worthwhile.

2.If there is an English exam two weeks later, you should go over English ____________ for days before that.

A．in the afternoon                        B．in the late evening

C．in the early morning                     D．right before the exam

3.From the passage, it can be inferred that ______________.

A．we eat more food at noon

B．we feel most tired if we exercise in the evening

C．it is a good choice to study math in the morning

D．we feel most sleepy before noon

4.Which would be the best title for the passage?

A．What’s Your Best Time of the Day for Different Tasks

B．How to Live a Healthier and Happier Life

C．How to Study Efficiently

D．How to Keep Your Best State of Learning

When it comes to eating smart for your heart, stop thinking about short-term solutions and simplify your life with a straightforward approach that will serve you well for years to come.
Smart eating goes beyond analyzing every bite of food you lift  36  your mouth. “In the past we used to believe that  37  amounts of individual nutrients were the 38 to good health,” Linda Van Horn, professor of the American Heart Association's Nutrition Committee. "But now we have a 39 understanding of healthy eating and the kinds of food necessary to  40  not only heart disease but disease  41  general," she adds.
Scientists now  42 on the broader picture of the balance of food eaten  43  several days or a week  44 than on the number of milligrams of this or that  45  at each meal.
Fruits, vegetables and whole grains, for example, provide nutrients and plant-based compounds 46 to good health. “The more we learn, the more  47  we are by the wealth of essential substances they  48 ," Van Horn continues, "and how they  49  with each other to keep us healthy."
You'll automatically be  50  the right heart-healthy track if vegetables, fruits and whole grains make 51  three quarters of the food on your dinner plate. 52  in the remaining one quarter with lean meat or chicken, fish or eggs.
The foods you choose to eat as well as those you choose to  53  clearly contribute to your well-being. Without a  54 , each of the small decisions you make in this can make a big 55  on your health in the years to come.
【小题1】 A between         B through           C inside                D to
【小题2】A serious          B splendid          C specific          D separate
【小题3】A key              B point             C lead              D center
【小题4】A strict           B different         C typical               D natural
【小题5】A rescue           B prevent              C forbid                D offend
【小题6】A in               B upon              C for               D by
【小题7】A turn             B put               C focus             D carry
【小题8】A over         B along             C with              D beyond
【小题9】A other            B better                C rather                D sooner
【小题10】A conveyed        B consumed          C entered               D exhausted
【小题11】A vital          B initial               C valid             D efficient
【小题12】A disturbed       B depressed         C amazed               D amused
【小题13】A preserve            B contain              C attain                D maintain
【小题14】A interfere           B interact            C occupy            D rest
【小题15】A at              B of                    C on                   D within
【小题16】A out             B into              C off              D up
【小题17】A Engage          B Fill              C Involve               D Pack
【小题18】A delete          B escape                C avoid             D spoil
【小题19】A notion          B hesitation            C reason                D doubt
【小题20】A outcome     B function          C impact                D commitment

Almost everyone wants to get smarter. We struggle to improve our  36_ , intelligence and attention. We drink cup after cup of coffee to help us  37_  the day.

 38 __, a new study published in Current Directions in Psychological Science warns that there are 39___ to how smart humans can get.

Each of our body parts develops in a certain way for a reason.  40  _, we are not 3 meters tall  41 _ most people’s hearts are not strong enough to send  42 _  up that high. Scientists say that our thinking ability works in the same way. A baby’s brain size is limited by a series of __43  , such as the size of the mother’s pelvis (骨盆). If our brains developed to be bigger, there could be more  44  during childbirth.

The study of Jews, who have an average IQ much _ 45_  than other Europeans, showed they were more  _46_  to develop diseases of the  _47_  system. This might be because of their increased brainpower.

If intelligence cannot be improved, can we at least get better at _ 48 _ ? Not really, say scientists. They studied  _49_  like caffeine (咖啡因)that improve attention. They found the drugs only helped people with serious  50 _ problems. For those who did not have trouble paying attention, the drugs could have the  51 _ effect. Scientists say that this suggests there is a(n)  52 limit to how much people can or should concentrate.

Our memory is also a “double-edged sword”. People with extremely good memories could  53__ having a difficult life because they cannot  _54 bad things that happen to them.

Thomas Hills, one of the authors of the paper, said that   55  all the problems in trying to get smarter, it’s unlikely that there will ever be a “super mind”.

1.                A．ability          B．character       C．memory  D．emotion

2.                A．go through      B．put through      C．get through    D．carry through

3.                A．Though         B．Therefore       C．However  D．Meanwhile

4.                A．standards       B．measures       C．ranges   D．limits

5.                A．At first         B．In addition       C．For example   D．Above all

6.                A．until           B．because        C．before   D．so that

7.                A．blood          B．information      C．breath   D．strength

8.                A．factors         B．reasons         C．aspects   D．effects

9.                A．chances        B．deaths          C．choices   D．lives

10.               A．smarter        B．better          C．lower D．higher

11.               A．likely          B．possible        C．probable  D．sure

12.               A．physical        B．bodily          C．personal   D．nervous

13.               A．exercising      B．concentrating    C．memorizing D．thinking

14.               A．poisons        B．drinks          C．plants     D．drugs

15.               A．attention       B．family          C．health D．living

16.               A．same          B．opposite        C．different  D．similar

17.               A．lower          B．smaller         C．upper     D．higher

18.               A．end up         B．make up        C．start up   D．come up

19.               A．forget          B．remember      C．perform   D．share

20.               A．supposing       B．concerning      C．considering D．regarding

As I was leaving to meet Lynne，my roommate told me that I’d better take some money，but I didn’t listen to him. I thought that Lynne would pay because she had invited me.

I arrived at the restaurant exactly on time. I’d been told that Americans expect you to be on time. Lynne and I sat at a table in the corner of the restaurant and a waitress came and took our order. The dinner was a great success. I talked a lot about Saudi Arabia and Lynne told me all about herself. After two hours the waitress finally came and asked if we wanted one check or two. Lynne said two. We went to the cashier and Lynne paid her check. I was embarrassed (尴尬) when the cashier gave me my bill. I had no money to pay for my meal. Then I had an idea. I pretended to look for something in my pockets and said，“Oh！I forgot my money! Can I call my roommate，please？” The cashier showed me where the phone was and I quickly called my roommate.

In a few minutes he arrived with some money，but he couldn’t hide how he felt. He laughed all the way home.

Now，I think it’s funny too. But at the time I was terribly embarrassed. I thought that an invitation to have dinner meant the same thing in the United States as in my country. I guess you have to understand that your customs（习俗） are only your customs. When you visit a foreign country，you have to learn about their customs，too.

1.Customs can be ________in different countries according to this passage.

A．close to each other  B．entirely different    C．quite the same     D．very similar

2.The writer’s roommate advised the writer to take some money with him to________.

A．invite Lynne to dinner                    B．pay for the table

C．share the cost of the meal                 D．pay for the restaurant

3.The writer and Lynne________.

A．shared a successful dinner                B．had a talk for three hours

C．traveled to Saudi Arabia together           D．enjoyed their meal without talking

4.Why didn’t Lynne pay the check for the writer?

A．Because she thought it was natural for people to pay their own check.

B．Because she didn’t have the meal.

C．Because she wanted to embarrass the writer.

D．Because she didn’t have enough money with her.

5.The roommate laughed all the way home because the writer________.

A．was embarrassed when he couldn’t pay his breakfast

B．would not listen to him when he left the house

C．telephoned him to bring some books to him

D．hadn’t told Lynne the truth