单项选择题

Stokoe' s argument is based on his belief that______

A．sign language is as efficient as any other language
B．sign language is derived from natural language
C．language is a system of meaningful codes
D．language is a product of the brain

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热门试题

单项选择题

We learn from the passage that______

A．one doesn't need to take any medicine if he has a cold or flu
B．aspirin should not be included in over-the-counter medicines for the flu
C．delayed treatment of the flu will harm the liver and central nervous system
D．over-the-counter drugs can be taken to ease the misery caused by a cold or flu

单项选择题

According to the author, knowing the cause of the misery will help ______

A．shorten the duration of the illness
B．the patient buy medicine over the counter
C．the patient obtain cheaper prescription drugs
D．prevent people from catching colds and the flu