Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
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A
which
B
what
C
that
D
when
推荐题目
He threw away all the ______ cigarettes, _______ to give up smoking for the sake of his health.
#4651
A
remained; determining
B
leaving; determined
C
remaining; determined
D
left; determining
.Every year in April, the Water Festival ______ among the Dai people in Xishuangbanna.
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A
celebrates
B
is celebrating
C
is celebrated
D
is being celebrated
.The man founded a charity(慈善事业)_____________ his late wife.
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A
in memory of
B
to remember
C
for the memory of
D
to the memory of