28． Which is NOT true?

A． The land never stops becoming deserts．

B． Scientists ask the people to live in the deserts and grow food there．

C． People do bad things to the earth．

D． Scientists may not be able to change the deserts．

[单选题]28． Which is NOT true?A．Now in Germany，the teleshopping is more developed than that last year．B． The French spend a lot of money to buy things by teleshopping，C． Some big companies in Sweden are selling things by teleshoppingD． Americans are the firs

[单选题]28． Which of the following may the author disagree?A． Sitting up slowly without using your hands helps burn calories．B． Eating apples every day is good for people's health．C． You have to join a gym if you want to lose weight．D． It’s good to walk aro

[单选题]28． Which is a good place for studying?A． A clean and beautiful place．B． The place with a computer．C． The place with a television and a radio．D． A quiet place with a chair ,a desk and some study materials．

[单选题]Which is NOT TRUE? ________A． The kangaroos can go over nine metres in one jump.B． Koalas like eating leaves from gum trees.C． Koalas use their voices to mark their homes.

[单选题]Which of the following is TRUE?A． The writer's family is the poorest one on that street.B． Watching the rich girl eating cookies, those hungry children cried.C． The writer wants to move out of that district.D． The writer hopes that her children will

[单选题]which descnption is NOT true?A．Personal computer has not the features of the larger system．B．Large systems offer higher processing speeds for user and return more data than PCs．C．Output devices take output results from the CPU in machine-coded form.

[单选题]Which of the following is true?A．The water in Texas have been reduced by 75%.B．Most industries in the world suffer from water shortagers.C．The underground water in Saudi Arabia might run out in 50 years.D．Good management of water use resulted from th

[单选题]Which of the following is true ?A． In different countries, the manners are the same .B． Different manners in different countries .C． Good manners are not important .D． In Arabic countries we mustn’t be careful with our hands .

[单选题]Which statement is NOT true?A．While displacement pump works, volume of the working chamber will increase and decrease alternatelyB．A gear pump always has two gearsC．Any vane pump will have a rotor within a ringD．A balanced vane pump has two outlet po

[单选题]Which statement is NOT true?A．In a simple vane pump, the rotor and cam ring are exactly concentricB．Balanced vane pump has an elliptical cam ringC．Liquid in both gear pump and vane pump are forced out to the outlet.D．Balanced vane pumps can work at a