题目内容
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余项。
1 Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.
The ridge (隆起) structure on a person's fingers does not change with growth and is not affected by surface injuries.Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern.2 Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.
Finger-prints can be made very easily with printer's ink.They can be recorded easily. 3 Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case.A suspected man may deny a charge but this may be in vain. 4 When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye.
5 Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.
A.Special techniques are used to "develop" them.
B.A fingerprint is an impression of the friction ridges of all part of the finger.
C.It is only when the inner skin is injured that the arrangement will be destroyed.
D.With special methods, identification can be achieved successfully within a short time.
E.This is called a latent print.
F.His finger-prints can prove who he is even if his appearance has been changed by age or accident.
G.Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable.
GCDFA
第二节(共5小题;每小题2分,满分10分)
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
In 1990 a report was published about what the earth might be like 20 years from then on. 71 According to the report,the picture of the earth in the year 2010 is not a pleasant one. 72 The population could be as large as 6300 million,almost 2150 million more than in 1985.More people would move into cities ,especially cities in developing countries.Cities like Cairo and Jakarta probably would each have 15 million by then.
73 Farmers will grow 90% more food than they did in 1985,but most of the increase would be in countries that already produce enough food for their people. 74 Poor farming ways are destroying large areas of crop land,changing farms into deserts.More farmland is lost as cities become larger and more houses are built.Air pollution will get worse as industrial countries burn more coal and oil.Many of the world's forests could disappear as more and more trees are cut down.Energy will continue to be a serious problem. 75 They only workde out the situation that exists today.By changing the situation,by settling the problems,the picture can be changed.There is still time for the nations of the world to work out a plan of action.But they warned that waiting too long to make de cisions would greatly reduce the chances of success.
A.Food production will increase,but not enough to feed all the people. |
B.The report was a result of a three - year study. |
C.Later on,more reports came out one by one. |
D.The world will be more crowded because the population will continue to grow. |
E.Experts believe enough food will be produced in developing countries very soon.
F.The experts say their picture of the earth for the year 2010 may be wrong.
G.Little increase is expected in South Asia,Africa and the Middle East.