2022年成人高考专升本《英语》仿真模拟题及答案1-7

Passage Three

Nature has devised many ways to protect creatures'eyes.The most common protection is the eyelid--a fold of skin that closes over the eye,protecting it from damage.Eyelashes are useful for keeping out dust and other irritants,and tears wash away any particles that get through the other defenses.

Some creatures,including most birds,have three eyelids.The upper and lower lids act like human lids and keep out twigs,dirt and sand.The third eyelid,however,is a semitransparent tissue that crosses over the eye from the inside corner to the outside corner.Because of this protective membrane,birds seldom have to blink.They close their eyes only when they go to sleep.In ducks,this third eyelid self as an underwater diving mask that helps the ducks find food.

Most fish and snakes have no eyelids at all.Instead,a hard glassy covering protects their eyes.In fish,water constantly sweeps away dirt from the covering.And a snake's eyesight is usually so bad that a little dirt obscuring its vision does not disturb it greatly.

Eyelashes defend the eye by shading it from glare.They also act like miniature brushes to remove dust.Camels have lashes that are four inches long to protect their eyes from windblown sand in the desert.

44.A camel has long eyelashes__________.

A.to keep windblown sand out of its eyes

B.that get in the way of its sight

C.to help it see better

D.to attract other camels

45.The writer implies that eyelids are__________.

A.not found on lizards

B.nice to look at

C.always covered with eyelashes

D.the most effective eye protection

46.The author compares the duck's third eyelid to a__________.

A.tissue

B.glassy covering

C.tiny brush

D.diving mask

47.A good title for this passage would be__________.

A.Look Out

B.Birds'Eyes

C.Eyes in the Night

D.Protecting the Eye

第三篇

【答案】

44.A45.D46.D47.D

【解析】

44.最后一段最后一句。骆驼的眼睫毛如此长是为了挡住沙漠中大风吹起的沙子。选项A是正确的。

45.作者说，大多数的鱼和蛇没有眼皮，但并未说所有的蜥蜴都没有眼皮，排除选项A。第一段说眼皮和眼睫毛都是保护眼睛的;第二段说有些动物如鸟类有三层眼皮，但并未说睫毛;第三段说有些动物没有眼皮;第四段说骆驼的睫毛长。这些都未提及有眼皮就肯定有睫毛，排除选项C。选项D是正确的。

46：第二段最后。鸭子的第三层眼皮如同潜水罩。选项D是正确的。

47.选项B是错的。文章不光讨论了鸟，也讨论了鱼、蛇等;文章讨论的焦点不是眼睛而是眼皮。选项D是正确的。文章讨论了保护眼睛的是什么。

【原文大意】

大自然给动物设计了很多保护眼睛的方法。最普通的保护方式是眼皮——眼睛外部一层折叠的皮肤，用来保护眼睛免受伤害。眼睫毛是用来挡住外来的灰尘和其他的刺激物的。眼泪可以冲刷掉冲破其他防御措施进入眼睛的微粒。

有些动物，包括大多数的鸟类，有三层眼皮。上下眼皮跟人类眼皮的功能是一样的：把碎枝、灰尘和沙子阻挡在外。而第三层眼皮是半透明的薄膜，从内眼角到外眼角盖住眼睛。正是因为这种保护膜，鸟很少眨眼。它们只有睡觉时才闭眼。对鸭子来说，这第三层眼皮就像是水下的潜水罩，帮助鸭子寻找食物。

大多数鱼和蛇类根本没有眼皮，而是有一种坚硬的玻璃状覆盖层来保护眼睛。作为鱼来讲，水不停地把附着在覆盖层上的脏东西冲洗干净。而蛇的视力通常是很差的，一点脏东西对它的视觉没有多大的影响。

眼睫毛可作遮挡保护眼睛免受强光。它们的功能如同微缩的刷子，扫去灰尘。骆驼有4英寸长的睫毛来保护它们的眼睛不被沙漠中风刮起的沙子伤害。

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