单项选择题

Such electronic devices（）are used in a radio set are also found in a computer.

A．which
B．that
C．what
D．as

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单项选择题

Does he speak English or JapaneseHe doesn't speak（）.

A．either
B．neither
C．none
D．all

单项选择题

That tree looked as if it（）for a long time.

A．hasn't watered
B．didn't water
C．hadn't been watered
D．wasn't watered

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