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阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项

                                                                                                        D

    When six the very best students from different cities in Guangdong province all together chose universities in Hong Kong; when the very best students of Beijing picked up HK University while giving up the nearby Peking or Tsinghua University; when the highest enrollment (录取) rate of Hong Kong Science and Industry University reached 48:1, it's the high time to ask where the real education heaven for students in China is.

    Years ago, the answer certainly would be “Peking or Tsinghua University”. But now no one could give the exact reaction without hesitation. The only sure thing is that HK universities have gradually showed an unusual attraction to a great many mainland students.

    It's no doubt to call this HK craze (狂热), which is even out of the expectation of those HK universities themselves.

    How can HK universities shake the steady foundations of Peking and Tsinghua and attract so many mainland students?

    First, Hong Kong universities offer large-amount scholarship, especially for the top students who can receive the sum scholarship as much as 400,000 HK dollars. Since higher education has become a kind of heavy burden of many families, it's easy to understand why the reaction to the generous offering of HK universities is great.

    Second, most HK universities receive professors and students from all over the world and carry out bilingual (双语) education. This kind of excellent language atmosphere is another attraction for mainland students.

    Furthermore, university students in Hong Kong have a better chance to study abroad as exchange students.

    Can mainland top universities like Peking or Tsinghua University calm as before when facing the unexpected competition from HK? Will they take relevant measures to win back the top students who once help them set the worldwide reputation? Time will explain it.

    The fierce competition brought by HK universities can be a good thing for an entire improvement of education in China.After the awakening and action taking of mainland universities, they can perform better together with HK universities.

    At least, it reminded the mainland universities the tuition fees (学费) are among students' top concern when they are choosing universities. It's time to move.

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同类题4

阅读下面选文,完成下列各题。

无坚不摧的“水刀”

华兴恒

       ①随着科学技术的发展,科学家已研发出一项新的加工技术﹣﹣高压水射流切割技术,这种技术就是利用高压水射流来切割材料的技术,这种高压水射流被人们形象地称之为“水刀”

       ②“水刀”的工作原理并不复杂。一般来说,当人们通过一定的方法迫使水以超过声速的速度通过极小的喷嘴时,聚集成的高压水射流就具有了切割不同材料的能力,这种高压水射流的出口直径还不到0.5毫米,比我们常用的最细的自动铅笔芯的直径还要细一些,水从出口喷出时的压强非常大,相当于在一平方毫米的面积上放上5千克的物体所产生的压力。在如此大的压力作用下,这种超音速的水流在冲到被加工材料的瞬间,由于突然受到阻碍,其速度就会急速下降,压力骤然增加,顷刻间就会产生巨大的冲击力。这种冲击力使被加工受冲击的部位在极小的面积上发生脆性断裂,从而达到切割工件的目的。

       “水刀”几乎可以做到攻无不克、无坚不摧,无论是工字钢、装甲板还是防弹玻璃,都可以被“水刀”随心所欲地切削。用“水刀”加工的工件的切口整齐光滑,没有粗糙的边缘,也没有分层、撕扯、变形等问题。“水刀”可以加工用金属刀具无法加工的复杂型面,还能沿任意曲线切开的零部件。“水刀”工作过程所产生的热量几乎都可以被水带走,同时,在切割的过程中,“水刀”所引起的振动和噪声都很小,所产生的少量切屑也会随水流走,不会出现切屑飞扬的情况。另外,使用“水刀”不存在刀具磨损的问题,所产生的废水还可以回收利用,这样又达到了节约用水的目的。

       ④“水刀”的应用范围广泛。由于“水刀”具有不是刀却胜于刀的特点,因此在采矿行业中得到了广泛应用。它可以用来在坚硬的岩石上打眼,还可以用来破碎岩石。在南非,工人利用“水刀”在地下几千米的金矿中切割石英岩壁上的矿块。我国有些煤矿使用了一种“水刀”采煤机,利用高压水射流的冲击力来采煤,效果非常理想。由于“水刀”切割不会产生火花,不存在使气体燃烧而发生爆炸的隐患,因此可以代替常规的爆破方式。由于“水刀”切割具有准确无误的特点,因此在制鞋工业中,用它来切割鞋片,快速又省力。它可同时切割四层泡沫塑料而不走样,还能节省10%﹣15%的材料。此外,“水刀”在造纸业、机械制造业以及电子工业中也发挥着越来越重要的作用。

       ⑤“水刀”的应用前景十分诱人,它将在各行各业中大显身手。

(选自《百科知识》,有改动)