New Foods and the New World  In the last 500 years, nothing

New Foods and the New World  In the last 500 years, nothing about people -- not

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In the last paragraph the statement "only one became Pele" i

In the last paragraph the statement "only one became Pele" indicates that.A.Pele

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Mr Johnson evidently regarded this as a great joke.

Mr Johnson evidently regarded this as a great joke.A.readily B.casually C.obviou

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S02的主要作用部位是( )。

S02的主要作用部位是( )。A.细支气管 B.上呼吸道 C.毛细支气管 D.肺泡 E.食管

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血液凝固、血块收缩后析出的液体是( )

血液凝固、血块收缩后析出的液体是( )

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