单项选择题

The author points out at the beginning that ______.

A．every child in hospital receives some teaching
B．not enough is known about hospital teaching
C．hospital teaching is of poor quality
D．the special children's hospitals are worst off

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热门试题

单项选择题

In developing the main point, the author makes use of ______.

A．scientific arguments
B．convincing testimony
C．common sense observations
D．analogy

单项选择题

In densely populated suburban areas, a danger exits from ______.

A．streams that do not flow directly to open bodies of water
B．cesspools and septic tanks that contaminate water supplies
C．storm and waste disposal sewers that have been combined
D．the undesirable odors of sewage