Through the last paragraph, the writer wants to prove _________.
A.it's fashionable these days to talk about America’s decline
B.it's fashionable to talk about the loss of the work ethic
C.it's fashionable bunk to talk about the loss of the work ethic
D.America's economy is growing at an impressive rate
第5题
未煮熟的豆浆中容易引起食物中毒的有毒物质是()。
A.龙葵素
B.氢氰酸
C.胰蛋白酶抑制素
D.秋水仙碱
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