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烧心是指胸骨后或剑突下烧灼感,常由胸骨上段向下延伸。
A.正确
B.错误
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Suppose that a disease that affects people who consume beef has been discovered in the United States. One likely result is:
答案:
A.a decrease in the quantity demanded of beef.
B.a decre...
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The following are the leisure activities outside the home for American adults EXPECT .
A、playing bowling
B、playing soccer
C、attending public service activities
D、attening church-related activities
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