单项选择题

In the first paragraph, the author tells us that ______.

A．historical study of phrases using bull as an image
B．bears and bulls are not friends of humans
C．bulls are powerful animals and people associate them with certain feelings
D．bears and bulls used to be worshipped by primitive people

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热门试题

单项选择题

By saying Producers would like the same meat quantity but to use reduced inputs to get there ( Line 2 - 3, Para. 3 ), Mike suggests that ______.

A．chicken's quality could be maintained but with less investment
B．chickens' taste could be improved but at less costs
C．chicken' s growth rate could be quickened with less inputs
D．chickens could grow to the same weight but with less feed

单项选择题

Which institution has offered $ 4.7 million to fund the research

A．The US' s National Institute of Science and Technology.
B．Origen therapeutics of Burlingame, California.
C．Embrex of North Carolina.
D．Animal welfare groups.