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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)____
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)____
admin
2013-11-10
47
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.
(7)
选项
A、other
B、the others
C、the other
D、another
答案
D
解析
代词辨析题。[D]another指的是不定数目中的另一个,符合文意,所以正确答案是[D]。[A]other表示“其余的”,一般用于the或物主代词之后,因此排除;[B]the others所指的是复数概念,根据常识,光线不是从一个表面被反射到多个表面,因此排除;[C]the other表示的是两个人或事物中的另一个,排除。
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0
专业英语四级
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