单选题
General acceptance of 3-D. films may prove hard to
come by
, as the experience of three decades ago indicated.
A、
obtain
B、
explain
C、
understand
D、
discern
【正确答案】
A
【答案解析】
come by sth.固定短语搭配，意为“获得，得到”。A选项：获得，得到。B选项：解释。C选项：理解。D选项：看出，分辨，察觉。
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