单项选择题

(By the 1980s) more than (two-fifth of) U.S. crop production was exported, (making) U.S. agriculture heavily (dependent) upon international markets.

A. By the 1980s
B. two-fifth of
C. making
D. dependent
<上一题 目录 下一题>
热门 试题

单项选择题
Stable political conditions and freedom (from) foreign invasion enable a country to develop its natural resources peacefully and steadily, and (to produce) more wealth than (the other) country equally well served by nature but (less well) ordered.
A. from
B. to produce
C. the other
D. less well
单项选择题
According the author, competition differs from conflict in that ______.
A．it results in war in most cases
B．it induces efforts to expand territory
C．it is a kind of opposition among social entities
D．it is essentially a struggle for existence
相关试题