单项选择题

According to the article we know it is （） to prevent the forest from slowly disappearing.

A．necessary but impossible
B．necessary but difficult
C．impossible and unimportant
D．difficult and impossible

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单项选择题
Which of the following is NOT true（）

A．People can visit Ellis Isalnd free of charge.
B．The boat departure time from battery Park is at 9:15a. m. all the year round.
C．Ferry fees for children are cheaper than for adults.
D．Ferry fees for group visitors can be discounted (折扣).
单项选择题
In summer, visitors will have（）to visit Ellis Island.

A．no enough time
B．longer time
C．shorter time
D．a wonderful time
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