单项选择题

How many dangers will animals meet in the deep sea

A． Two.
B． Three.
C． Four.
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单项选择题
Why do people want to dive in the sea Because ______.
[A] they want to catch fish
B. they want to find the secrets of the undersea world
C. the sea is deep
单项选择题
How many floors docs the building have
A． Fourteen floors.
B． Fifteen floors.
C． Sixteen floors.
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