[单项选择](No wonder) that (man's) great dream has been someday to control the weather. The first step toward control is knowledge, and scientists have been (hard at work) for years trying to (keep track for) the weather.

[单项选择](No wonder) that (man's) great dream has been someday to control the weather. The first step toward control is, of course, knowledge, and scientists have been (hard at work) for years trying to (keep track with) the weather.

[单项选择]In some societies a man has more than one wife and the first one is more important than the others.

[单项选择]

The dog has always been considered man’ s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range(放牧区), and beside the hunter in forest. He is easy to train, works hard, and often performs astonishing feats. And in the frozen polar regions he was once the principal motive power, before being lately displaced by the plane and helicopter. Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to men. Actually, the basis for these beliefs lies in the hound’ s sensibility to people’ s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master. The dog&rs
A. carried supplies
B. provided companionship
C. tracked prey
D. herded caribou(驯鹿)

[单项选择]Some one has said that a man's history begins about one hundred and fifty years before his birth, or words ______.
A. in any case
B. to that effect
C. in a sense
D. to the contrary

[单项选择]I don't understand why such a good man has been treated with such scorn and ________.
A. difference
B. inference
C. indifference
D. reference

[单项选择]I don' t understand why such a good man has been treated with such scorn and ______ .
A. defection
B. defense
C. difference
D. indifference

[单项选择]There has been some ______ of entry into American schools to Chinese students.
A. limit
B. restriction
C. confine
D. imprisonment

[单项选择]If a man has been unemployed for a year, he _______
A. will be happy and relieved.
B. will be hopeless.
C. will lose patience
D. both B and C

[单项选择]There has been some _________of entry into American schools to Chinese students.
A. limit
B. restriction
C. confine
D. imprisonment

[单项选择]Free play has been introduced in some Japanese kindergartens in order to ______.

[单项选择]It has been revealed that some doctors have a history of abusing that trust for profit, ______ unnecessary and ineffective diet regimes to all comers.
A. delivering
B. ordering
C. advising
D. prescribing

[单项选择]

Passage Four For some time past it has been widely accepted that babies and other creatures learn to do things because certain acts lead to" rewards"; and there is no reason to doubt that this is true. But it used also to be widely believed that effective rewards, at least in the early stages, had to be directly related to such basic physiological "drives" as thirst or hunger. In other words, a baby would learn if he got food or drink or some sort of physical comfort, not otherwise. It is now clear that this is not so. Babies will learn to behave in ways that produce results in the world with no reward except the successful outcome. Papousek began his studies by using milk in the normal way to "reward" the babies and so teach them to carry out some simple movements, such as turning the head to one side or the other. Then he noticed that a baby who had had enough to drink would refuse the milk but would still go on making the learned response w
A. a basic human desire to understand and control the world
B. the satisfaction of certain physiological needs
C. their strong desire to solve complex problems
D. a fundamental human urge to display their learned skills