Five or more short blasts on a vessel’s whistle indicates that she is ______.A.in doubt th

A.It provides a thesis statement to present the main point of the essay.

B.It has a one-paragraph introduction and a one-paragraph conclusion.

C.It contains two to four body paragraphs.

D.It has exactly five paragraphs in no more than 500 words.

way to do it？ I will read the newspaper to see if anything is on sale that we need. Since we have a fridge, we can buy some items and freeze them for later use.

？You will hear five short recordings.

？For each recording, decide what the speaker is trying to do.

？Write one letter (A--H) next to the number of the recording.

？Do not use any letter more than once.

？You will hear the five recordings twice.

A to send a telex

B to check a car

C to run a store

D to scan the ads

E to drive a car

F to read a magazine

G to take a vacation

H to buy clothes

___________.

A.one short blast

B.one prolonged blast

C.not less than five short blasts

D.not less than five prolonged blasts

189. What will man be like in the future—in 5,000 or even 50,000 years from now？ We can only make a guess, of course, but we can be sure that he will be different from what he is today. For man is slowly changing all the time. Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller. Five hundred years is a relatively short period of time, so we may assume that man will continue to grow taller. Again, in the modern world we use our brains a great deal. Even so, we still make use of only about 20% of the brain’s capacity. As time goes on, however, we shall have to use our brains more and more—and eventually we shall need larger ones. This is likely to bring about a physical change too: the head, in particular the forehead, will grow larger. Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we have to wear glasses. But over a very long period of time it is likely that man’s eyes will grow stronger. On the other hand, we tend to make less use of our arms and legs. These, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life. But what about hair？ This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer. In the future, then, both sexes are likely to be bald. Perhaps all this gives the impression that future man will not be a very attractive creature to look at. This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us. He will still be a human being, with thoughts and emotions similar to our own. [共5题]

(1) Future man is likely to be different from us ________.

(A) in quite a few ways (B) in almost every way

(C) in great many ways (D) in one or two ways

(2) The reason for believing that future man will be different is that man ________.

(A) began to change five hundred years ago

(B) never stops changing

(C) never stops growing

(D) has recently begun to change

(3) People’s heads will eventually grow larger. This is because their brains ________.

(A) will grow faster than at present

(B) will need more room than at present

(C) will play an important part

(D) will be in constant use

(4) Future man will probably ________.

(A) have bigger eyes (B) get weaker eyes

(C) see better (D) have to wear better glasses

(5) Future man’s hair will ________.

(A) grow darker (B) stop growing completely

(C) fall out more often (D) get longer

A．The pear．

B．The sea fooD

C．The weather．

D．The col

D．

same amount of time, say exercise researchers in Britain. But walks of any length beat sitting at home with your feet up and watching television. They stress. Some researchers in Britain reached these conclusions after putting 56 couch potatoes through an 18 week course of daily walks. They found that longer walks produce the most beneficial changes to the composition of blood fats, but walks of any length improve the fitness of the heart.

In the study, the normally inactive subjects were divided into three roughly equal groups. The "long walker" took a hike of between 20 and 40 minutes every day. "Intermediate walkers" had two rounds of jogging of 10 to 15 minutes, and "short walkers" did three stints of 90 to 110 minutes. The controls sat at home, as usual.

At the start and end of the 18 weeks, the health and fitness of each group were measured and it was found that the long walkers were healthiest, as measured by altered fat profiles in their blood. At the end, each liter of blood from the long walkers contained an average 0.05 grains less apolipoprotein(阿朴脂蛋白) II, a "bad" fat that is linked with heart disease. This was more than twice the drop seen in the intermediate walkers, and five times that in short walkers. In the controls, the level of this fat stayed the same. The drop in apolipoprotein II in the long walker was matched by a rise in the blood level of apolipoprotein I, a "good" fat that is associated with smooth arteries.

1、According to the researchers, ______ is least beneficial to your health.

A、taking a lengthy hike once a day

B、going shopping several times every day

C、doing jogging every morning

D、sitting in the sofa watching TV every evening

2、"Couch potato" in paragraph 2 is used to refer to a kind of ______.

A、farmers

B、vegetables

C、movie-goers

D、TV viewers

3、Which of the following statement is FALSE？()

A、Longer walks benefit our composition of blood fats

B、The subjects in the study all often watch TV

C、Only longer walks benefit our health

D、The subjects in the study may not like exercises

4、The subjects are divided into ______ groups.

A、four

B、three

C、two

D、one

5、Why is long walk beneficial to our heart？()

A、It leads to the drop in apolipoprotein I

B、It leads to the drop in apolipoprotein II

C、It keeps us from watching TV

D、It helps us lose weight

so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy--one plate, one knife, one spoon, one fork, for each of the five chairs. Soon they are capable of noting that they have placed five knives, spoons, and forks on the table and, a bit later, that this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and retrieved seven years later, he or she could enter a second-grade mathematics class without any serius problems of intellectual adjustment.

Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped--or, as the case might be bumped into- concepts that adults take for granted, as they refused, for instance, to concede that quantity is unchanged as water pours from short stout glass into a tall thin one. Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort. They have also suggested that the very concept of abstract numbers--the idea of a oneness, a twoness, a threenes that applies to any class of objects and is a prerequisite for doing anything more mathematically demanding than setting a table--is itself far from innate.

What does the passage mainly discuss？

A．Trends in teaching mathematics to children.

B．The use of mathematics in child psychology.

C．The development of mathematical ability in children.

D．The fundamental concepts of mathematics that children must learn.

A.more

B.much

C.quite

D.very