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A.Australia possesses the richest species in the world. |
B.Australia is the country with the highest rate of extinction. |
C.The species in the southwest of Australia will be easily affected by global warming. |
D.Australia will have the highest temperature in the world. |
A.are rich in plants and animals |
B.are lacking in natural resources |
C.lost most of their plants in 2010 |
D.will be much hotter than the rest of the world |
A.north | B.east | C.west | D.south |
A.Australia Named as Extinction”Hot Spot” |
B.Global Warming and Species Extinction |
C.Global Warming is Number One Killer |
D.Australia on the Edge of Extinction |
A.She chatted with her neighbors. | B.She quarreled with a stranger. |
C.She went door to door,talking. | D.She talked to patients in hospital. |
A.inspired | B.discouraged | C.confused | D.disturbed |
A.Introduction to a one woman litter awareness campaign. |
B.How Benita Started the one woman litter awareness campaign. |
C.Why Benita Started the one woman litter awareness campaign. |
D.Benita and the one woman litter awareness campaign. |
A.sing better | B.do better in exams |
C.recognize sounds better | D.response more quickly |
A.change the structure of the brain |
B.improve children’s learning skills |
C.help children focus their attention |
D.provide more memorizing methods |
A.Adults should also take some music lessons. |
B.The author has taken violin lessons when he was young. |
C.Even a day’s music training can affect the human brain. |
D.Music training can also help children with certain disabilities. |
| Surface area(sq mi) | Volume(cu mi) | Percentage of total | |
Salt water | ||||
The oceans | 139,500,000 | 317,000,000 | 97.2% | |
Inland seas and saline lakes | 270,000 | 25,000 | 0.008 | |
Fresh water | ||||
Freshwater lakes | 330,000 | 30,000 | 0.009 | |
All rivers(average level) | - | 300 | 0.0001 | |
Antarctic Icecap | 6,000,000 | 6,300,000 | 1.9 | |
Arctic Icecap and glaciers | 900,000 | 680,000 | 0. 21 | |
Water in the atmosphere | 197,000,000 | 3,100 | 0. 001 | |
Ground water within half a mile from surface a mile from surface | - | 1,000,000 | 0. 31 | |
Deep-lying ground water | - | 1,000,000 | 0. 31 | |
Total (rounded) | - | 326,000,000 | 100.00 | |
A.Fresh Water in the World | B.Water Supply of the World |
C.Salt Water of the Earth | D.Protection of the Water in the World |
A.humans will have to use sea water in the future |
B.there is enough fresh water for man to use |
C.Water in the atmosphere is the least |
D.the sea water takes up 98%of the water on earth |
A.about 1,086,700 cu mi | B.about 6,300,000 cu mi |
C.about 680,000 cu mi | D.about 2,000,000 cu mi |
A.In Arctic Icecap and glaciers. | B.In Deep ground. |
C.In the Antarctic Icecap. | D.In the atmosphere. |
A.Freshwater lakes and all rivers(average level) |
B.Antarctic Icecap and water in the atmosphere |
C.Ground water within half a mile from surface and Deep-lying ground water. |
D.Deep-lying ground water and Arctic Icecap and glaciers |
A.China has founded a base on the moon |
B.China has founded one base on the North and South Poles |
C.China will set up a base on the moon in 2010 |
D.China has already finished founding a moon base |
A.landing | B.relation | C.connection | D.behaviour |
A.A second home is going to be built on the moon in 2010. |
B.China"s first man has landed the moon in space. |
C.People from only two countries have been to the moon till now. |
D.Twelve Chinese astronauts are being trained for the manned flight to the moon. |
A.China will ask for help from the USSR and the USA |
B.two countries have set up a space station on the moon |
C.China has a large population in the world |
D.China has its tradition technology and advanced scientists |
A.China’s robot landing in the moon has been successful |
B.the USSR and the USA don’t allow Chinese people to land on the moon |
C.Chinese scientists show great interest in exploring Mars now |
D.it is impossible for the Chinese people to land on the moon |
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