单项选择题

The renowned professor provided much evidence against ______ any extraterrestrial intelligence ever found in the universe.

A. there to be
B. there was
C. there having been
D. there being
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单项选择题
Poets do not ______ have to be commentators on the historic present; there is a world within as well as a world without.
A. absolutely
B. eventually
C. necessarily
D. accidentally
单项选择题
They persuaded party leaders to adopt the initiative and ______ took an important role in the process of implementation.
A. consequently
B. subsequently
C. frequently
D. sequentially
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