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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
42
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.
(3)
选项
A、some
B、great
C、few
D、little
答案
D
解析
语法题。[C]few和[D]little都可以用来表示“几乎没有”的意思,但是few一般用于修饰可数名词,little则用于修饰不可数名词。在原句中出现的是doubt这个不可数名词,所以[D]为正确答案。根据文意判断,空格中应该填入表示否定意思的限定词,[A]some和[B]great都表示肯定,不符合要求,排除。
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0
专业英语四级
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