Tropical cyclones(热带旋风) are called typhoons（台风） in Asia, and hurricanes（飓风）in North and South America. These storms go around like a wheel（轮子） turning to the left. They have wind spends of 60 kph or more. They can be very destructive（毁灭性的）.In the United States, the Tropical Prediction Center in Miami, Florida, looks out for hurricanes. When scientists discover a true hurricane, they give it a name. They can use either a man’s or woman’s name. Why should hurricanes have names? The names make it easier forpeople to keep up with information about a hurricane and its dangers.

　 The World Meteorological Organization(WMO) , an international weather group, decides what names will be used. The WMO makes six lists of names, using the English alphabet. Each list is used for one year. When a hurricane happens, it gets the next name on the listfor that year. For example ,the first hurricane of the year might have the name Abel, whilethe second one could Betty. The name lists do not include names beginning with the letters O, U, X, Y, and Z, since there are few names that begin with these letters. Asian countries use a different list. This list has a few personal names, but most of the names are of flowers, animals and trees.

（ ）1．Why should hurricanes have names?

A. It sounds interesting.

B. The names help people get information about a hurricane.

C. The names are only for the WMO.

D. It is traditional.

( ) 2.　　 decides what names will be used for hurricanes.

A.The Tropical Prediction Centre　　 B. A scientist　　 C.The WMO　　 D. Abel

( ) 3. Which name would a hurricane never have?

A.Rita 　　　　 B. Veronica. 　 C. William　 D. Yanni

( ) 4.The Fifth hurricane of 2010 might have the name　　　 .

A.Diana　　　　 B. Darren　　　 C. Erie　　　 D. Connie

( ) 5. Asian countries name typhoons after 　　　 .

A. books and buildings　　　　　　　 B. flowers and animals

C. mountains and rivers　　　　　　 C. oceans and rivers

A Brown University sleep researcher has some advice for people who run high schools: Don’t start classes so early in the morning. It may not be that the students who nod off at their desks are lazy. And it may not be that their parents have failed to enforce(确保) bedtime. Instead, it may be that biologically(生物学上)these sleepyhead(贪睡者)students aren’t used to the early hour.

　　“Maybe these kids are being asked to rise at the wrong time for their bodies,” says Mary Carskadon, a professor looking at problem of adolescent (青春期的)sleep at Brown’s School of Medicine.

　　Carskadon is trying to understand more about the effects of early school time in adolescents. And, at a more basic level, she and her team are trying to learn more about how the biological changes of adolescence affect sleep needs and patterns(方式).

　　Carskadon says her work suggests that adolescents may need more sleep than they did at childhood, no less, as commonly thought.

　　Sleep patterns change during adolescence, as any parent of an adolescent can prove. Most adolescents prefer to stay up later at night and sleep later in the morning. But it’s not just a matter of choice---their bodies are going through a change of sleep patterns.

　　All of this makes the transfer(迁移)from middle school to high school---which may start one hour earlier in the morning----all the more difficult, Carskadon says. With their increased need for sleep and their biological clocks set on the “sleep late, rise late” pattern, adolescents are up against difficulties when they try to be up by 5 or 6 a.m. for a 7:30 a.m. first bell. A short sleep on a desktop may be their body’s way of saying. “I need a timeout.”

1.Carskadon suggests that high schools should not start classes so early in the morning because _______.

A．it is really tough for parents to enforce bedtime

B．it is biologically difficult for students to rise early

C．students work so late at night that they can’t get up early

D．students are so lazy that they don’t like to go to school early

2.The underlined phrase nod off most probably means _______.

A．turn around       B．agree with others   C．fall asleep         D．refuse to work

3.What might be a reason for the hard transfer from middle school to high school?

A．Adolescents depend more on their parents.

B．Adolescents have to choose their sleep patterns.

C．Adolescents sleep better than they did at childhood.

D．Adolescents need more sleep than they used to.

4.What is the test mainly about?

A．Adolescent health care.

B．Problems in adolescent learning.

C．Adolescent sleep difficulties.

D．Changes in adolescent sleep needs and patterns.

No air means death. There is air around us  36 we can’t see it. Air is everywhere and it gives   37 　to every living thing. We can’t live  38  it. Bad air makes people ill. We must have fresh air to keep us  39 .
In the city there are a lot of people and there are too many  40  running on the road. The gas which the car sends out is made up of(组成) bad gases. Every day we  41  it in and        out. This makes us feel sick. There are many  42 , too. From the chimneys(烟囱) of these factories, we  43  get the smoke in black color. This kind of smoke is  44 to our health. So in order to keep us healthy, we have to go out to the   45  to breathe more fresh air. Or we can go up hills to get more fresh air.
【小题1】A. because            B. though              C. so
【小题2】A. life               B. name     　        C. pleasure
【小题3】A. with               B. without         C. below
【小题4】A. quiet              B. tall      　   C. healthy
【小题5】A. dogs           B. trains     　  C. cars
【小题6】A. breathe            B. draw      　   C. bring
【小题7】A. animals            B. people          C. factories
【小题8】A. usually  　　      B. never    　        C. seldom
【小题9】A. helpful    　　    B. dangerous       C. necessary
【小题10】A. office   　      B. city            C. Countryside