单项选择题

My doctor said I should vary my diet more（）

A．change
B．prepare
C．cook
D．choose

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单项选择题

The test produced disappointing results.（）

A．unsatisfactory
B．indirect
C．similar
D．positive

单项选择题

Marsha confessed that she knew nothing of computer.（）

A．admitted
B．reported
C．hoped
D．answered

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