职称英语 (12)
最新试题
He was banned from driving for six months.
05-09
I am heartily grateful to your help.
05-09
It seems highly unlikely that she will pass the exam.
05-09
My principal concern is to get the job done fast.
05-09
The frame needs to be strong enough to support the engine.
05-09
The ice is not thick enough to bear the weight of a tank.
05-09
He kept constant contact with his family while he was in Australia.
05-09
Dairy products may provoke allergic reactions in some people.
05-09
Cocktail is blended by many kinds of wines.
05-09
The book raised a storm of controversy.
05-09
热门试题
"There is no other choice,"she said in a harsh voice.
You should convert RMB into foreign currency before you go abroad.
My doctor said I should vary my diet more.
共用题干
VisionHuman vision like that of other primates（灵长目）has evolved in an arboreal（丛林）environment.______(46)In the course of evolution,members of the primate line have acquired large eyes while the nose has shrunk.______ (47) Of mammals（哺乳动物）only humans and some primates enjoy color vision.______(48)Horses live in a single-color world.Light visible to human eyes,however,occupies only a very narrow band in the whole electromagnetic spectrum（光谱）.Ultraviolet rays（紫外线）are invisible to humans though ants and honeybees are sensitive to them.______(49)The world would look terribly different if human eyes were、 sensitive to infrared radiation（红外线）.Then instead of the darkness of night,we would be able to move easily in a strange shadowless world.______(50)But human eyes excel in other ways. They are in fact remarkably discerning in color gradation. The color sensitivity of normal human vision is rarely surpassed even by complicated technical devices.
Jess likes playing basketball，but I like swimming.
He cannot diseriminate between a good idea and a bad one.
There is a growing gap between the rich and the poor.
The only way to cure your toothache is to extract your bad tooth.
That guy is intelligent but a bit dull．
A number of theories have been proposed to explain the situation.
