问题 单项选择题

很多人都打过篮球,知道打篮球与踢足球相比,投进一个球比踢进一个球要容易得多。这跟篮球架的高度有关。如果把篮球架做成两层楼那样高,要进球可就不那么容易了。反过来讲,假如篮球架只有普通人那么高,进球更容易了,我们还会去玩它吗就是因为篮球架有一个适当的高度,我们跳一跳就够得着,才使得篮球成为一个世界性的体育项目。
这个事例提醒我们( )。

A.制订一个奋斗目标是成功的前提
B.真正伟大的目标,一定是面对未来的
C.目标高度合适,有利于调动人的积极性
D.一步步完成小目标,最终可以完成大目标

答案

参考答案:C

解析: 对于篮球来说,篮球架太高或太低都会影响人们参加的积极性,这也提醒我们,要制订高度合适的目标,才能调动人的积极性。故选C。

单项选择题
单项选择题

If there is one thing scientists have to hear, it is that the game is over. Raised on the belief of an endless voyage of discovery, they recoil from the suggestion that most of the best things have already been located. If they have, today’s scientists can hope to contribute no more than a few grace notes to the symphony of science.

A book to be published in Britain this week, The End of Science, argues persuasively that this is the case. Its author, John Horgan, is a senior writer for Scientific American magazine, who has interviewed many of today’s leading scientists and science philosophers. The shock of realizing that science might be over came to him, he says, when he was talking to Oxford mathematician and physicist Sir Roger Penrose.

The End of Science provoked a wave of denunciation in the United States last year. "The reaction has been one of complete shock and disbelief, "Mr. Horgan says.

The real question is whether any remaining unsolved problems, of which there are plenty, lend themselves to universal solutions. If they do not, then the focus of scientific discovery is already narrowing. Since the triumphs of the 1960s—the genetic code, plate tectonics, and the microwave background radiation that went a long way towards proving the Big Bang—genuine scientific revolutions have been scarce. More scientists are now alive, spending more money on research, that ever. Yet most of the great discoveries of the 19th and 20th centuries were made before the appearance of state sponsorship, when the scientific enterprise was a fraction of its present size.

Were the scientists who made these discoveries brighter than today’s That seems unlikely. A far more reasonable explanation is that fundamental science has already entered a period of diminished returns. "Look, don’t get me wrong," says Mr Horgan. "There are lots of important things still to study, and applied science and engineering can go on for ever. I hope we get a cure for cancer, and for mental disease, though there are few real signs of progress.

The term "the Big Bang" probably refers to()

A. the genetic code theory

B. a geological theory

C. a theory of the origin of the universe

D. the origin and the power of atomic energy