64. The passage is mainly about ________.

A. when and where debris flows occur　　 　　　　 B. the experiments that scientists conduct

C. the causes of debris flows　　　　　 　　　　　　　　 D. the possible ways to predict landslides

63. Which of the following is TRUE according the second notice?

A. Applicants must go to the City of Lethbridge for applications in person.

B. The City of Lethbridge will inform all applicants of their final choice.

C. The 2009 Census is expected to be completed on April 22，2009.

D. Applicants must post their applications before February 17，2009．

C

Earthquakes and volcanic eruptions usually cause the largest, most disastrous debris (碎石) flows. A great many victims of the earthquake that struck Wenchuan of Sichuan province last year were killed not by the quake itself but by the sudden large amounts of debris that followed.

Most debris flows occur where the soil is composed mainly of sand or colluviums (崩积层). Loose soils made up of bits of sand or colluviums fall apart easily and are main material for fast -moving debris flows.

Scientists have conducted endless experiments to find out how debris flows work. They have learned that the amount and the timing of water entering the soil are crucial (决定性的). Typically, that means debris flows often occur when a long rainy period of many weeks is followed by an intense, brief heavy rain.

More often than not, however, debris flows are started by water, in the form of rain, snow, or river flow. In 1998, heavy rains from Hurricane Mitch unleashed about one million tons of mudslides, burying thousands of people in Central America.

Water flows through the soil until it hits a hard layer of bedrock or clay. There the water builds up, filling the tiny spaces between the soil and rock. That buildup reduces the natural friction (摩擦力) that keeps the rock and soil debris lying on the slope. If conditions are approaching dangerous levels, the slope will then fall down.

Despite what scientist know about the fact, debris flows are still impossible to predict at present because there are many other uncertainties affect the stability of each slope. However, one thing is known: On hillsides where one debris flow has occurred, another will eventually follow. The next debris flow could take days, weeks, or years to happen.

62. What can be inferred from the second notice?

A. Applicants can have a three-week paid leave to do the census.

B. Applicants have to walk around the city to do the census.

C. Senior citizens are impossible to be accepted as applicants.

D. New citizens of Lethbridge will not be considered as applicants.

61. What do we know from the first notice?

A. Residents can either attend the meeting or complete a survey to share their input.

B. The consultation will last almost three months before a draft plan comes out.

C. The final plan is due on April l，2009 for the development of the park.

D. Residents must contact Kristine Hebert to finish the survey before February 6.

60. What’s the purpose of the first notice?

A. To inform residents of a meeting in Lake Ontario Park.

B. To invite residents to pay a visit to Lake Ontario Park.

C. To test residents’ knowledge about Lake Ontario Park.

D. To ask for advice on the development of Lake Ontario Park.

59. The author’s attitude towards weboholism is that of being _______.

A. optimistic　　　　 B. positive　　　　　　 C. oppositive　　　　 D. acceptable

B

NOTICE DATE: JANUARY 6, 2009

NOTICE

Lake Ontario Park---Public Consultation(咨询)

Details:

Residents are invited to offer their input on how they would like to see Lake Ontario Park developed at an upcoming public meeting or through a Your Opinion survey. A public meeting to envision Lake Ontario Park is set for: 7 p.m.to 9 p.m, Jan. 21 at the INVISTA Centre (1350 Gardiner’s Rd) To complete the Your Opinion survey on Lake Ontario Park go to cityofkingston.ca/lopplan to let us know: * How you would like to use the park? * What improvements you would like to see made to the park? * What events you would most like to see at the park? This consultation continues until Feb. 6 and marks the beginning of Phase II of the Lake Ontario Park Master Plan to revitalize (使恢复生机)the park. A draft of the Lake Ontario Master Plan will then be presented for public comment at a second session scheduled for April 1, 2009. For more information, contact Kristine Hebert, Parks & Open Space Planning Coordinator, 613-546-4291, ext. 1256.

NOTICE DATE:JANUARY 6,2009

NOTICE

Census Takers (普查工作人员)Required

Details:

The City of Lethbridge will be conducting the 2009 Census for a three-week period beginning April 1. If you are: * A person who enjoys walking * A resident of the City of Lethbridge * 18 years of age or over * Physically able to walk long distances * Available for the entire three week census period, you are invited to complete an application. Applications are available at the City of Lethbridge, 2nd Floor, 910, 4th Avenue South between 8:00 a.m and 4:30 p.m. They may also be downloaded here. Applications will be accepted in person up to 4:30 p.m, Tuesday, February 17, 2009. All are thanked for their interest. However, only those individuals being considered will be contacted. If you have any questions about the census, please contact the Census Office: Aleta Neufeld, Deputy City Clerk (403)320-4083　 aneufeld@lethbridge.ca David Sarsfield, Census Coordinator (403)329-7329　 dsarsfield@lethbridge.ca

58. Which of the following is NOT true of weboholism?

A. It contributes to the development of the web.

B. The chat room language may change social culture.

C. The problem will be getting more and more serious later.

D. People addicted to the web often become inactive in real life.

57. We can infer from the passage that ________.

A. weboholism has the greatest effect on teenagers

B. students can hardly balance real and virtual life

C. people are addicted to games on the Internet

D. virtual life is more vivid and attractive anyway

56. The main idea of the passage is about __________.

A. the cause of weboholism　　　　　　　　 B. the advantage of weboholism

C. the popularity of weboholism　　　　　 D. the influence of weboholism