语法与词汇
9.
At that time, this kind of cloth was hard to ______ because the textile technology was not that advanced.
A、
come up with
B、
come through
C、
come over
D、
come by
【正确答案】
D
【答案解析】
come by得到；从旁走过。come up with提出；想出；赶上。come through经历；安然度过；获得成功。come over过来；顺便来访；抓住。
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