单项选择题

Many people proposed that a national committee be formed to discuss () to existing mass transit systems.

A. substitutes
B. measures
C. duplicates
D. alternatives

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单项选择题
All the commodities sold in that shop are given one year’s ().

A. assurance
B. warrant
C. guarantee
D. insurance
单项选择题
The insurance company paid him $5,000 in () after his accident.

A. compensation
B. installment
C. substitution
D. commission
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