问题
选择题
. A nature reserve for white-flag dolphins was set up in 1992, _______ boats have been
prohibited from sailing around since then.
A．where
B．which
C．when
D．what
答案
答案：A
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. A nature reserve for white-flag dolphins was set up in 1992, _______ boats have been
prohibited from sailing around since then.
A．where
B．which
C．when
D．what
答案：A