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【单选题】
哪一类藻类的同化产物含白糖素？A.
甲藻
B.
硅藻
C.
D.
裸藻
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反馈参考答案：
举一反三
【单选题】The missing boy were last seen _________ near the bank.
A.
playing
B.
to be playing
C.
play
D.
to play
【单选题】The missing boy were last seen ______ near the river.
A.
playing
B.
be playing
C.
play
D.
to play
【单选题】The missing boy were last seen _______near the river.
A.
playing
B.
be playing
C.
play
D.
to play
【单选题】At the moment, the police ______trying their best to search for the missing boy.
A.
are
B.
is
C.
were
D.
was
【单选题】The whole class_____searching for the missing boy when the heavy rain poured down
A.
was
B.
were
C.
had been
D.
would be
【简答题】The boy was missing. His parents were very concerned about his safety.
【单选题】The missing boy were last seen near the river.
A.
to play
B.
play
C.
to be playing
D.
playing
【单选题】It’s reported that many policemen were sent to the forest ____________ the missing boy.
A.
in need of
B.
in favor of
C.
in honor of
D.
in search of
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