A．Paper plates are cheaper than dishes.B．Dishes break more easily than paper plates.C．
A. Paper plates are cheaper than dishes.
B. Dishes break more easily than paper plates.
C. There is no need to wash any dishes now.
D. The women's roommate, will return soon.
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A．She has not applied for any university yet.B．She will begin university classes in a
A. She has not applied for any university yet.
B. She will begin university classes in a few weeks.
C. She does not know yet if a university will accept her.
D. She is too busy to contact the university right now.
A．He will choose a new topic to write the essay.B．He will choose the novel written by
A. He will choose a new topic to write the essay.
B. He will choose the novel written by Shakespeare as the topic.
C. He refuses to accept the man's advice.
D. He is on the wrong track.
A．She should live in the country.B．She should live near the spring.C．He prefers to liv
A. She should live in the country.
B. She should live near the spring.
C. He prefers to live in the country.
D. He agrees with the women.
According to Paragraph 5, the author's description of Ames' test include all of the following EXCEPT that ______.
A. he had known that bacteria were sensitive to substances that cause mutation
B. he had been aware that carcinogens would probably be mutagens
C. he conducted a carcinogen test by using bacteria
D. he tried to repeat a carcinogen test hailed by all scientists in the field
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