题目内容

The local government ( ) a campaign against waste, calling on local residents to join in.

A. established
B. launched
C. initiated
D. developed

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Their research appears in the October 19 () of the journal Nature.

A. version
B. edition
C. series
D. issue

The scientist () that nuclear power was a safe and unpolluted energy source.

A. assured
B. asserted
C. assumed
D. assaulted

He had hoped to set a new world record, but was () by bad weather.

A. defeated
B. destroyed
C. disappointed
D. frustrated

Have you read the article written by three top medical experts in the latest () of the periodical?

A. copy
B. issue
C. version
D. edition