单项选择题

A. keep up a regular pattern of lifeB. prevent trouble ……

Suppose we built a robot to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times No, the robot would be using up energy at a time when it was not receiving any. So we would probably program it to stop its activity at night and to wake up at dawn the next morning.
According to evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent.
The evolutionary theory explain the differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.
Evolution has programmed man to sleep at night chiefly to help him ______.

A. keep up a regular pattern of life
B. prevent trouble that comes looking for him
C. avoid danger and inefficient labor
D. restore his bodily functions

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单项选择题The public started to know something about Jonathan just from ______.

A. his helping the US FBI to find out the sender of the dangerous "I LOVE YOU" virus
B. his work together with Fredrik Bjoerck to find out the maker of the "Melissa" virus
C. his little sister’s talk about his good qualities as a regular kid and a good programmer
D. his speech on e-security to many computer companies after his fight against hackers

单项选择题The author considers that a fairy story is more effective when it is（）

A. repeated without any change
B. treated as a joke
C. made some changes by the parent
D. set in the present

问答题这座体育馆将于明年建成。

问答题我们将在明天下午举行班会。

单项选择题What does the reader learn from the first paragraph A. The greatest victory for a man is to conquer everything except himself. B. One’s moral freedom is based on the control of himself. C. To control oneself is the most difficult in one’s life. D. If a person is too stubborn, he will feel most shameful.

A single angry word has lost many a friend. When Socrates found in himself any temper or anger, he would check it by speaking low in order to control himself. If you are conscious of being angry, keep your mouth shut so that you can hold back rising anger. Many a person has dropped dead in great anger. Fits of anger bring fits of disease. "Whom the gods would destroy they first make mad. " "Keep cool", says George Herbert, "for fierceness makes error a fault. "
To be angry with a weak man is to prove that you are not strong yourself. "Anger, " says Pythagoras, "brings with folly and ends with regret. " You must measure the strength of a man by the power of the feelings he conquers, not by the power of those which conquer him.
Self-control is man’s last greatest victory.
If a man lacks self-control he seems to lack everything. Without it he can have no patience, no power to govern himself; he can have no self-confidence, for he will always be controlled by his strongest feeling. If he lacks self-control, the very backbone and nerve of character are lacking also.