2. 专升本
  3. (2010)____his lecture gives us a much better understanding of low-carbon economy.

(2010)____his lecture gives us a much better understanding of low-carbon economy.

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问题 (2010)____his lecture gives us a much better understanding of low-carbon economy.
选项 A、To have listened to
B、Having listened to
C、Listening to
D、Being listened to
答案C
解析
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