单项选择题

61（）

A．either
B．whether
C．ever
D．as well

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Since 1950s, the computer industry has ______.
A．declined
B．remained about the same
C．increased tremendously
D．increased slightly
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From the text we can infer a horticulturist is person engaged in ______.
A．growing plants
B．raising birds
C．cutting plants
D．studying the death cause of plants
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