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The nature of light is not wholly known, but it is generally believed to be
The nature of light is not wholly known, but it is generally believed to be
游客
2023-11-10
32
管理
问题
The nature of light is not wholly known, but it is generally believed to be matter, as in its(1)______, it obeys the laws(2)______matter. So closely is it connected with heat and electricity that there can be (3)______ doubt of their all being(4)______ different modifications of the same substance. The effects of light(5)______ other bodies and how light is affected by them(6)______ some important principles.
Rays of light are reflected from one surface to(7)______. It is by this reflection of light that objects are(8)______ visible. However, unless light falls directly(9) ______the eye they are invisible, and are not(10)______felt until after a certain series of operations upon the various coverings of the eye. Smooth and(11)______surfaces reflect light most powerfully, and send to the eye the images of the objects (12)______ the light proceeded before reflection. Glass would be of no use to us as a mirror, were it not first(13)______on one side, interrupting the rays in their(14)______from the glass into the air. The reason why trees, rocks and animals are not all mirrors is that their surfaces are(15)______, and rays of light reflected from such a surface are(16)______in every direction. Stand before a mirror and your image is formed and appears to be as far(17)______the glass as you are before it. Rays of light(18) ______reflected at the same(19) ______at which they fall upon a mirror, two persons can stand in (20)______ position that each can see the image of the other without seeing his own. [br] (4)
选项
A、but
B、still
C、hardly
D、narrowly
答案
A
解析
副词辨析题。[A]but作为副词,意思与only相似,表示“仅仅”,用在空格中符合原文的逻辑含义,因此为正确答案。[B]still的意思是“仍旧”,一般用于表示在做出让步、妥协或是采取措施等之后,情况依旧,没有变化,不符合原句的逻辑关系,排除;[C]hardly表示“几乎不”,表示否定含义,也不符合原句的意思和逻辑关系,因此排除;[D]narrowly的意思是“勉强地”,不符合句意,故排除。
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