单项选择题

Remember to ask for a () of quality for these goods; otherwise they will not offer any maintenance.

A. warranty
B. promise
C. certificate
D. receipt

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单项选择题

I will never () the experiences of the four years at Howard University, though there were unhappy encounters.

A. discharge
B. recharge
C. discard
D. dispose

单项选择题

Whenever we hear of a natural disaster, we feel sympathetic to the people to be affected.

A. to have affected

B. to have effected
C. who have been effected
D. who have been affected

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