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【简答题】
在下面各图中画斜线表示它下面的百分数．
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举一反三
【单选题】同一条等产量线上的各点代表（）
A.
为生产同等产量，投入要素的各种组合比例是不能变化的
B.
为生产同等产量，要素的价格是不变的
C.
不管投入各种要素如何，产量总是相等的
D.
投入要素的各种组合所能生产的产量都是相等的
【单选题】It can be inferred from the second paragraph that ______.
A.
the regulatory approval is limited with respect to the scope of application
B.
the life expectancy will not be improved compared with that indicated by the current record
C.
America's Food and Drug' Administration gave its approval to a new type of artificial heart
D.
Doctors will implants the new device in patients whose hearts are about to fail
【单选题】Money is something,but money doesn't mean__.
A.
Something
B.
Anything
C.
Everything
D.
Nothing
【单选题】Money is something, but money doesn't mean .
A.
something
B.
anything
C.
everything
D.
nothing
【单选题】Which of the following statements, according to the passage, is NOT true? A．A．limited water supply will affect industrial production.
B.
Every large city purifies and reuses its water.
C.
Purified water is not exactly as fresh as spring water.
D.
Oceans are the largest water source.
【简答题】According to some nutrition researchers, the vegetable prescription program will have limited effect on obesity if carried out______.
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