One can't see well through a telescope without correctly______ it to one's sight.
A.balancing
B.adopting
C.repairing
D.adjusting

A.A.balancing
B.adopting
C.repairing

【参考答案】

D
解析：我们在使用望远镜的时候如果不能调节到适合自己的视角是看不清楚前方的物体的。balance平衡；adop......

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