单项选择题

This article is primarily about ______.

A．growing indoor plants
B．growing tropical plants
C．making containers for plants
D．choosing appropriate containers for indoor plants
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单项选择题
The expression esthetic qualities might have something to do with the ______ of the containers.
A．size and shape
B．drainage and light
C．attractiveness and decorative value
D．availability only
单项选择题
The author implies that ______.
A．plants in containers have less varieties of form
B．plants can be damaged if they are given too much water
C．most plants should be placed on window sills during winter months
D．some plants are particularly fit for container gardening
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