–I hear that a famous scientist will come to give us a talk. Do you know ?About the dev

–I hear that a famous scientist will come to give us a talk. Do you know ?
--About the development of the modern science.
A. when he will come
B. when will he come
C. what he will talk about
D. what will he talk about

A. when he will comeB. when will he come(答案→)C. what he will talk aboutD. what will he talk about解析：此题重点考查宾语从句的时态和语序问题，无论哪种句式结构充当宾语从句都要用陈述句语序，从句的时态要和主句的时态保持一致。

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