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【单选题】
生物利用度是反映什么的指标( )A.
蓄积
B.
分布
C.
吸收
D.
生物转化
E.
消除
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反馈参考答案：
举一反三
【多选题】When the passenger is worried about a minor fire, you can say ______.
A.
The fire is under our control.
B.
We are fightig against it.
C.
There is nothing you can do about it.
D.
Our flight attendants are very experienced.
【单选题】---Can you say something about Wenchuan earthquake (汶川地震)? ---___________ people lost their lives in it.
A.
Thousand
B.
Thousands of
C.
Three thousands
D.
Three thousands of
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