Factors of Production

A middleman's work may become difficult because ______.

A．manufacturers run their production on a much higher level

B．market demand may not be the same as industrial production

C．retailers are not necessary in running their retailing business

D．retailers demand lower levels than those demanded by manufacturers

根据下列文章，回答 51～55 题。

第 51 题 Almost all companies involved in new production and development must_____

According to the man, why is the price higher than half a year ago？

A．The cost of production has been raised.

B．Other companies' prices have been raised.

C．They improve the quality of the production.

D．He doesn't know.

转录因子(transcription factors，TF)

Factors Chain International(FCI)

认知因素(cognitive-perceptual factors)

What do you think is the best title for the passage？

A．Factors Affecting Intelligence

B．Non-Intelligence Factors

C．Study on Non-Intelligence Factors

D．How to Cultivate Children's Non-Intelligence Factors

A. reasons

B. courses

C. facts

D. factors

The division of labor is one of the factors leading to the rise of industry.

A．Y

B．N

C．NG

All of the following could be the contributing factors to heart disease EXCEPT ______ .

A．heavy smoking

B．binge drinking

C．saturated animal fat intake

D．vegetable consumption