[单项选择]What had been taking place during the time of the Roses


A. the development of England
B. a series of wars
C. the growth of poetry
D. the Battle of the Armada

[单项选择]What had been taking place during the time of the Roses


A. the development of England
B. a series of wars
C. the growth of poetry
D. the Battle of the Armada

[单项选择]What had wealthy businessmen been doing


A. They had been financing the United National Party.
B. They had been fighting the Tamil Tiger rebels and the United National Party.
C. They had been financing the Tamil Tiger rebels and the opposition United National Party.
D. They had been financing a military regime.

[单项选择]What had been the main factor preventing the development of battery buses


A. Their limited range.
B. Their high cost.
C. Their heavy weight.
D. Their loud nois

[单项选择]What had been the principal use of the antlers


A. To obtain the material for useful tools.
B. To prepare the fields for cultivation.
C. To help in removing trees and bushes so that land could be cultivated.
D. To make many objects useful in everyday lif

[单项选择]What time will the trip take place


A. Immediately after the class.
B. Following the laboratory.
C. The next day in the morning.
D. The next week in the morning.

[单项选择]What had been the trend of migration during the 20th century


A. The movement from rural to urban areas.
B. The movement from urban to rural areas.
C. The movement from Europe to America.
D. The movement from Africa to America.

[单项选择]What had Chinese Americans been associated for many years in the United States


A. Restaurants.
B. Laundries.
C. Gold.
D. Both A andB.

[单项选择]What is the man's opinion of taking a bath during a thunderstorm

[单项选择]What （） if the weather had been fine yesterday
A. would you do
B. would you have done
C. did you do
D. have you done

[单项选择]

For some time past it had been widely accepted that babies—and other creatures—learn to do things because certain acts lead to "rewards"; and there was 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(生理的) "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 lea
A. are directly related to pleasure
B. will meet their physical needs
C. will bring them a feeling of success
D. will satisfy their curiosity