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On what does the efficiency of a nation depend？A.Every individual. B.Its machines.C.Its

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Could you ______ reasons and examples for your answer？A.qualify B.quantify C.specifyD.satisfy

Mr. Wright was the ______ president of Ace Construction Company.A.previous B.beforeC.latter D.former

This country, as Lincoln said, belongs to the people. So do the natural resources which make it rich. They supply the basis of our prosperity now and hereafter. In preserving them, which is a national duty, we must not forget that monopoly is based on the control of natural resources and natural advantages, and that it will help the people little to conserve our natural wealth unless the benefits which it can yield are given back to the people. Let us remember, also, that conservation does not stop with the natural resources. The principle of making the best use of all we have requires that we stop the waste of human life in industry and prevent the waste of human welfare which flows from the unfair use of concentrated power and wealth in the hands of men whose eagerness for profit blinds them to the cost of what they do. We have no higher duty than to promote the efficiency of the individual. There is no surer road to the efficiency of the nation.What plays an essential role in making the nation prosperous according to this passage？A.Its money. B.Its trade.C.Its natural resources. D.Its people.

The author states that birds left the tropics because ______.A.there was not enough food there in the winterB.there were too many birdsC.there were too many glaciersD.there was too much daylight