单项选择题

The “over-the-counter drugs” are those that _______.

A．patients can get without doctors' prescriptions
B．can relieve the symptoms of a disease
C．attack the organism that causes a disease
D．tend to be complex and powerful synthetic drugs

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单项选择题

What is the main idea of this passage

A．The development of modern drugs.
B．How to make drugs.
C．How to use drugs safely.
D．The development of drugs.

单项选择题

The author suggests that on hot summer days one should drink _______.

A．warm milk
B．iced tea
C．cold Coca-Cola
D．hot coffee