大学英语大学英语大学英语六级(CET6)大学英语六级模拟题16
题目内容

The author uses the term “lifeblood" (line 1) to indicate that wheatwas____.

2024-07-09

A.difficult to produce in large quantities

B.susceptible to many parasites

C.essential to the health of the country

D.expensive to gather and transport

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