问题
单项选择题
I couldn't ______ the lecture at all. It was too difficult for me.
A．take on
B．take in
C．take over
D．take upon
答案
参考答案：B
解析：take in“理解”；take on“承担；从事”；take over“接管，接办”；take upon(oneself)“以……为己任”。
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