题目内容

What may appear ahead may _____ and bewilder those who do not choose to see through it.

A. upset
B. worry
C. dispirit
D. confuse

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Yet, as earth's other natural resources _____, nations eye the Antarctic as a final repository.

A. dwindle
B. dwarf
C. dwell
D. disappear

Some are in favor of the ____ system.They hold that since students attend the teachers' classes every day, they should have their opinions about their teachers' effectiveness.

A. ratio
B. rate
C. rating
D. rates

He vowed to achieve certain ____ before the end of his presidency.

A. objects
B. objectives
C. objections
D. objectivity

The on-site system has a _____ advantage in this respect, in that no transport problem exists..

A. distinctive
B. distinct
C. distinction
D. distinctable

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