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【多选题】
对金属毒物的吸收和毒性有较大影响A.
蛋白质
B.
碳水化物
C.
维生素 C
D.
维生素 B
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皮皮学刷刷变学霸
举一反三
【单选题】We managed to reach the top of the mountain, and half an hour later we began to_______.
A.
descend
B.
ascend
C.
decline
D.
plunge
【单选题】. ____ I am concerned, we should be brave and we will reach the top of the hill at last ____ we try our best to climb the hill.
A.
So long as; as long as
B.
As far as; as longer as
C.
So long as; as far as
D.
As far as; as long as
【单选题】We wondered they reach the top of the mountain.
A.
if ; can
B.
which ; could
C.
that ; will
D.
whether ; could
【单选题】We reach the top of the mountain before it got dark yesterday.
A.
could
B.
were able to
C.
can
D.
are able to
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