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题目内容
（四川农业大学大学英语）
10.In____preparation for the launching of Shenzhou spaceship, scientists
need____knowledge of weather changes
A. the, the
B.a,/.
C./,a
D.the,a.
need____knowledge of weather changes
A. the, the
B.a,/.
C./,a
D.the,a.
参考答案