49题
A.People spend more time at shopping centers that have trees.
B.In hot countries, urban forests are cool places for walking and other healthy exercises.
C.But you are not in rural areA.
D.Trees take pollution out of the air
E.In 2033, it will have 5 million trees
F.It has many kinds of birds in the countr

A.People
B.
B.In
C.
C.But
D.
D.Trees
E.In
F.It

【参考答案】

E
【解析】句意：在2033年，将有5百万棵树。前面几句有几个关键词：nowl.3milliontrees，ha......

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