题目内容
The science of medicine _______ progress has been rapid lately is perhaps the most important of all the science.?
| A．which? |
| B．in which? |
| C．that? |
| D．with which? |
B?
“介词+关系代词” 引出其后的定语从句，which指先行词the science of medicine,in which即in the science of medicine。
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