单项选择题

Which of the following statements is TRUE

A．Construction of buildings is good for trees.
B．Some trees' trouble comes from human beings.
C．People should keep trees beautiful.
D．Trees are not disturbed by changes around them.

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热门试题

单项选择题

People protect their environment by ______.

A．cutting down unhealthy trees
B．making changes around the trees
C．cooling and cleaning the air around the trees
D．protecting the environment for trees growth

单项选择题

People who love trees may ______.

A．never cause trees injury
B．damage trees on purple
C．do some harm to trees without knowing it
D．not be aware of which trees are healthy