题目内容

在补码1位乘法中，设[x]补为被乘数，[y]补为乘数。若ynyn+1(yn+1为低位)=00，应执行___操作；若ynyn+1=01，应执行_操作；若ynyn+1=10，应执行___操作；若ynyn+1=11，应执行操作。总机器数字长为16位(不包括符号位)，则补码乘法需作_次操作，最多需作次___操作。

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（英译汉）In addition to the need for food, man also has need for some kind of protection from heat and cold, and from wind and rain. The first homes of man were very simple. The size and kind of buildings which he built were limited by his technical knowledge and also by the kind of buildings materials(which were)available to him. Climate also had an important influence. In some places, man’s home would be nothing more than a cave in the side of a hill, with a fire at the entrance to give light and warmth and to keep dangerous wild animals away. In warmer areas primitive man could use branches to make a framework which he then covered with leaves.

Japan is a small country with few natural resources. (11 ) this，Japanese productivity，the rate at which goods are produced，(12 ) more than eleven times in the past thirty years.Many people in the West
wonder how the Japanese do it.The key (13 ) Japan's success can be discovered by looking at some basic differences between Japanese and Western attitudes towards work.People in the West generally view work (14 ) a necessary evil--one must give up part of one's freedom to earn the money needed to live. To the Japanese, however, work is the central interest of one's life;it's (15 ) that a Japanese established his identity.A Japanese business firm is like a family.When an employee joins a company，he expects to work for that company for the rest of his working life;(16 ) is anyone dismissed.Promotion is based on the seniority system，the length of employment (17 ) one's rank in the company. Those at the bottom do not (18 ) Chances for promotion because those at the top retire at a certain age (19 ) others may have their turn.In addition，the difference betweenthe lowest and the highest salaries is much 1ess than (20 ) in the West.
11.[A]Because of [B]As for [C]Although [D]Despite
12.[A]have increased [B]has increased [C]are increasing [D]is increasing
13.[A]to [B]of [C]for [D]in
14.[A]like [B]for [C]about [D]as
15.[A]this [B]that [C]here [D]where
16.[A]barely [B]rarely [C]occasionally [D]frequently
17.[A]determines [B]has determined [C]determining [D]to determine
18.[A]care about [B]care for [C]worry about [D]concern with
19.[A]in that [B]such that [C]for that [D]so that
20.[A]that [B]those [C]one [D]ones

（英译汉）When someone has deeply hurt you, it can be extremely difficult to let go of your anger. But forgiveness is possible--and it can be surprisingly helpful to your physical and mental health. Indeed, research has shown that people who forgive report more energy, better appetite and better sleep patterns.
So when someone has hurt you, calm yourself. Talk a couple of deep breaths and think of something that gives you pleasure: a beautiful scene in nature, someone you love. Don't wait for an apology(道歉 ). Keep in mind that forgiveness does not necessarily mean accepting the action of the person who upset you. Try to see thing from the other person's perspective. You may realize that he or she was acting out of ignorance, fear--even love. You may want to write a letter to yourself from that person's point of view.

The best example of how associations influence eating is that we often eat not because we're hungry but because it's "lunchtime," because foods smell good, or because our friends are eating.
More evidence that associations influence eating comes from marketing and advertising pressures to sell foods by offering huge servings. For example, movie theaters offer an extra large box of popcorn(爆玉米花)，which, at almost 900 calories, is equivalent to a major meal. Health professionals warn that as children, adolescents(青少年),and adults learn to prefer large portions and tasty foods high in fat,sugar,and calories,there has been a corresponding increase in rates of being overweight(from 25% in 1988 to 34% in 1998).Researchers are especially concerned about the continued rates of overweight and obesity(肥胖) in children since childhood obesity is very difficult to treat and an obese child has a high probability of becoming an obese adult with the associated health risks we discussed earlier.
Health professionals suggest that to avoid future increases in rates of overweight and obesity, we need to try hard to forget many of our food associations, which primarily involves decreasing size of food portions, increasing levels of activity to burn off excess calories.
26.The influence of food association can be seen clearly from the example that we often eat NOT
because__.
[A]it's time for lunch
[B]we're hungry
[C]foods smell delicious
[D]our friends are eating
27.From the passage we can infer that the "serving" in the second paragraph most
probably means.
[A]an amount of food
[B]a special service
[C]a meal
[D]some calories
28.According to the author, because of an unhealthy food preference, the increase in rates of being
overweight was almost _ during the ten years from 198 to 1998.
[A]10 per cent [B]20 per cent
[C]30 per cent [D]40 per cent
29.According to the passage, an obese child is _.
[A]less at risk of heart diseases
[B]healthily fat
[C]very hard to get along with
[D]more likely to become an obese adult
30.In order to avoid future increases in rates of overweight and obesity, we need to do
a11 the following EXCEPT _______.
[A1make an effort to forget our food association
[B]eat less high-fat food
[C]do more exercise to consume excess calories
[D]eat less food