By saying "first put their own houses in order"(Line 5, Para. 2), the author probably means
A. they should do their only housework properly.
B. house tidiness should be put in a priority.
C. women scientists should not be stuck by housework.
D. they should first settle problems occurring in their institutions.
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According to Darrell Trampel, what is likely to be blamed for salmonella outbreak？
A. Industrial agriculture.
B. Eggs.
C. Large farms.
D. Rats.
What does the National Cancer Institute intend to do？
A. To deal with the budget problem of its contract lab.
B. To attract more outside researchers to its research.
C. To find out how to tackle a cancer-related protein.
D. To separate the mutated cells from healthy ones.
Customers turned to local egg producers rather than supermarkets because they thought
A. it"s safer to eat free-range eggs.
B. small-scale producers are more humane.
C. salmonella is only limited to large farms.
D. free-range eggs have lower salmonella.
According to Paragraph 2, which of the following statements is true？
A. Different rates of common cancers in different regions result from different lifestyles.
B. The rate of several extremely common cancers in the U. S. is higher by 1/10 or 1/20.
C. People who migrate to the United States have high cancer rates after a generation.
D. If people out of the western world stay at home, their risk of cancer won"t rise.
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