问题 单项选择题

未来深海电缆的外皮是由玻璃制成的,而不是特殊的钢材或铝合金。原因是金属具有颗粒状的微观结构,在深海压力之下,粒子交接处的金属外皮易于断裂。玻璃外皮就不会有这种情况,因为玻璃虽然看起来是固体,但由于它在压力之下可以流动,所以可将之视为液体。
以下哪一项最有可能从上述议论中推出

A.液体没有颗粒状的微观结构。
B.所有称之为固体的东西只不过是移动极其缓慢的液体。
C.只有断裂的玻璃是微观粒状的。
D.作为一种建筑材料,玻璃优于钢材和铝材。

答案

参考答案:A

解析: 题干实际上有两个前提。由“所有具有颗粒状的微观结构的物体的外皮在深海压力下易于断裂”,“玻璃外皮在深海压力下不易于断裂”,可以推出“玻璃不是有颗粒状的微观结构的物体”,再加上题干的另外一个前提“玻璃可视为液体”,推出“液体不是有颗粒状的微观结构的物体”。所以,应该选A。

阅读理解

Autumn means different things to different people. It all depends on your personality, said British naturalist Richard Mabey. "Personality shapes your view of the season," he said. "You may see it as a fading away, a packing up(结束), or as a time of packing in another sense – the excited gathering of resources before a long journey."

If this is true, perhaps it tells us a little about, for instance, Thomas Hood, the 19th Century English poet. About November, he wrote:

No warmth, no cheerfulness, no healthful ease

No shade, no shine, no butterflies, no bees

November!

On the other hand, another English poet John Keats, already sensing he was seriously ill, was inspired by a late September day to pen one of the most famous poems in the English language, To Autumn. He wrote to a friend afterwards that there was something comforting and healing about it.

According to Richard Mabey, Keats has the biological evidence on his side. Autumn is not a time of slowing down, but a time of new beginnings and great movements of creatures. For example, just at the moment that Keats's "gathering swallows" (in To Autumn) are departing for Africa, millions of creatures are fleeing from the frozen north like Iceland, Greenland and Russia to winter along the east and south coasts of Britain. According to scientists, before falling, the leaves transfer their chlorophyll(叶绿素) and carbohydrates into the woody parts of the tree for safe-keeping over winter. What remains are the natural antioxidants(防老剂) in the leaves: the yellow and orange carotenoids(类胡萝卜素), and another protective chemical specially produced for autumn, the bright-red anthocyanin(花青素). High color is not a signal of deterioration(退化) and decline, but of detox(排毒的) ability and good health.

A century after Keats, the American poet Loren Eiseley wrote in his journal: "Suppose we saw ourselves burning like maples in a golden autumn. [And that we could] disintegrate(瓦解) like autumn leaves…dropping their substance like chlorophyll. Would not our attitude towards death be different?"

小题1:From Thomas Hood’s poem, we may infer that _______.

A.he suffered a lot from cold November

B.he missed the shining summer days very much

C.he had a negative attitude towards autumn

D.he enjoyed butterflies and bees very much小题2:Which word can best describe Loren Eiseley’s attitude towards autumn?

A.Optimistic.

B.Fearful.

C.Doubtful.

D.Realistic.小题3:In autumn, leaves turn yellow before falling because ______.

A.they can’t bear the freezing

B.they can’t get enough water from the wood part

C.chlorophyll and carbohydrates have been lost through leaves

D.chlorophyll and carbohydrates have come back to the wood part小题4:What does the underlined sentence mean?

A.Man can never live long, just as leaves must leave the tree annually.

B.Man is different from autumn leaves, which will come again the next spring.

C.Man should treat death calmly, just like autumn leaves fall to the ground.

D.Man should have a positive attitude towards death, quite different from autumn leaves.

单项选择题