Mary became______homesick and critical of the United States, so she fled from her home in
A. completely
B. sincerely
C. absolutely
D. increasingly
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听力原文：Which group of people is identified by the research as the most cold-ridden group？
(31)
A. Old people.
B. Teenagers.
C. Infants.
D. Adults.
【B6】
As
B. In
C. On
D. At
The author's primary purpose in writing this passage is to______.
A. warn people of the harm of H. pylori colonization of the stomach
B. make people aware of the harm of eradicating H. pylori from the stomach
C. suggest that the benefits of eradicating H. pylori from the stomach are not outweighed by the potential harm
D. call attention to the consequences of eradicating H. pylori from the stomach
【C13】
A. eventually
B. accidentally
C. surprisingly
D. fortunately
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