单项选择题

This article deals with the natural ______ which is most interesting to everyone.

A. phenomenon


B. phenomena
C. phenomenons


D. phenomenas
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单项选择题
Language belongs to each one of us, to the flower-seller ______ to the professor.
A. the same as


B. as long as
C. as much as


D. as far as
单项选择题
The train _______ at eight tonight.
A. will be started


B. will have started
C. shall be started


D. starts
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