March22ndisWorldWaterDay．Itsta-优题课

If we go online，we can find p　　of useful information．

You can't get to the airport on time u　　you hurry up．

Shanghai is a beautiful city．I have been there t　　．

Today there are 6.4 billion people on the earth．By the year 2050 there may be 12.5 billion．There are many people to feed．We need more and more food．

One way to produce more food is growing stronger plants．For thousands of years，farmers have made plants better．Every season，they pick the best plants for the next season．It words very slowly．Since 1983，scientists have been able to change plants more quickly by changing their genetic（遗传的） material．Foods from plants grown in this way are called genetically modified（转基因的） foods，or GM foods．

By changing the genetic material of a plant，it is possible to make new plants．Scientists make plants which are strong against plant diseases（疾病）．They can also help in our diseases，a kind of rice will be grown，for example，which stops people becoming blind．

Rich countries produce GM foods because they are easy to grow and bring in more money．Poor countries are interested in them because they help produce more food．

GM plants are not natural．No one knows how good or bad they are．Making GM foods is only one way of feeding people in 2050．There are strong feelings against them because they are unnatural．They may feed people，then hurt them or their children later．But both rich and poor countries are interested in their uses，and they are not going to go away．In 2050，we may think differently about them．

（1）There may be　　 billion people by the year 2050on the earth．

A.6.4

B.12.5

C.18.5

D.20.5

（2）How have scientists been able to change plants more quickly？　　

A．By making the best plans．

B．By asking the farmers to grow plants

C．By changing planting environment

D．By changing their genetic material

（3）Why do rich countries produce GM foods？　　

A．Because they are easy to grow and bring in more money．

B．Because they are easy to grow and very cheap．

C．Because they help produce more food．

D．Because they are the best plants．

（4）Which of the following is NOT true according to the passage？　　

A．GM plants are not natural．

B．GM plants are strong against plant diseases．

C．Everyone knows how good or bad GM plants are．

D．GM foods may hurt people or their children later．]

（5）What can we learn from the passage？　　

A．GM foods will disappear one day in the future．

B．GM foods will not disappear in the future．

C．People will not be interested in GM foods．

D．People will have to stop eating GM foods．

A young man told off（责备） a kid for eating on the subway in Hong Kong．The kid's mother got angry about the young man's attitude（态度） and they started to argue with each other．

This happened last year and has caused a huge argument on the Internet．Some people think the behavior（行为） of the kid，a Chinese tourist，was bad because eating is not allowed on the Hong Kong subway．Others say that，because there's on such rule in many other cities，it's reasonable that tourists didn't know about it．

James Tien，chairman of the Hong Kong Tourism Board，asked both sides to calm down．

"Both parties（当事人） should learn to see things from the other side．"he said．"Hong Kong citizens should be more polite and explain local rules to tourists．"He also thinks that travelers should improve their manners．"When in Rome，do as the Romans do．Social customs are different in different countries and cities．Travelers should follow the local rules．"

61．The kid's mother argued with the young man　　．

A．last year

B．last month

C．last week

D．two years ago

62．What does the underlined word"citizens"mean in Chinese？　　

A．权利

B．商业

C．公民

D．政府

63．James Tien thinks that．　

A．travelers should improve their manners

B．travelers shouldn't go to Hong Kong

C．travelers shouldn't take a subway

D．travelers should go shopping

64．Which of the following is true according to the passage？　　

A．Eating is not allowed on the subway in many other cities．

B．Social customs are the same in different countries and cities．

C．A young man told off a kid for crying on the subway in Hong Kong．

D．Eating on the Hong Kong subway caused the argument on the Internet．

65．What is the best title of the passage？　　

A．How to Be a Bad Tourist．

B．Follow the Local Rules When Traveling．

C．Reasons for Tourists'Worst Behaviors．

D．No Eating on the Hong Kong Subway．

1．A．drink	B．save	C．carry	D．watch
2．A．easy	B．popular	C．small	D．serious
3．A．factories	B．lakes	C．rivers	D．seas
4．A．gets back	B．hands in	C．changes into	D．picks up
5．A．nothing	B．something	C．nobody	D．somebody
6．A．What	B．Who	C．Why	D．How
7．A．work	B．interest	C．health	D．business
8．A．on	B．for	C．with	D．from
9，A．less	B．more	C．better	D．worse
10．A．and	B．whether	C．after	D．before