[单项选择]What kind of work does Mr. Collins do
A. He is a taxi driver.
B. He is an insurance salesman.
C. He is a sub driver.
D. He is a car salesman.

[单项选择]What kind of work does Mr. Collins do
A. He is a taxi driver.
B. He is an insurance salesman.
C. He is a sub driver.
D. He is a car salesman.

[单项选择]What kind of work does Ms. Wells hope to do
A. Sales
B. Accounting
C. Personnel
D. Customer service

[单项选择]What kind of work does Mr. Smith probably do （）
A. He fixes bicycles.
B. He sells chairs.
C. He raises sheep.
D. He’s a gardener.

[单项选择]What kind of work does he find most interesting
A. Making ad. plans.
B. Selling products successfully.
C. Developing new markets.
D. Making a new product.

[单项选择]What work does the man do
A. He is a traveling salesman.
B. He is a teacher.
C. He is a soldier.
D. He is retired.

[单项选择]What kind of company does the man work for
A. A cellphone company
B. An office furniture company
C. A medical supply company
D. A stationery company

[单项选择]What kind of research does the woman do

[填空题]What work does the other man do He is ______ .

[单项选择]How exactly, does science work How do scientists go about doing science Ordinarily we think science proceeds in a straight-forward way. Ideally scientists make observations, formulate hypotheses (假设), and test those hypotheses by making further observations. When there is difference between what is observed and what is predicted by the hypothesis, the hypothesis is revised. Science proceeds in this way, which is a gradual method of finding the best fit between observation and prediction.
But this idealized version of how one does science is naive. Although science demands proof that observations made by one observer be observable by other observers using the same methods, it is by no means dear that, even when confronted with identical phenomena, different observers will report identical observations. And it is most certain that, even if the same observations are made, the conclusions as to the meaning of the observations frequently differ.
The fact is that all of us, s
A. The research methods used by scientists.
B. Observation and human perception variation.
C. The relation between hypothesis and observation.
D. The human perceptual mechanism.

[单项选择]Why does Jack do yard work
A. To earn money for school.
B. To keep his family’s yard looking nice.
C. To be able to work outdoors.
D. To get exercise while working.