单选题
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
【正确答案】
B
【答案解析】
[解析] A．take on呈现，雇佣；B．take in吸收，理解；C．take over接管；D．take upon承担。
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