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    1分类计数原理:做一件事情,完成它可以有n类办法,在第一类办法中有种不同的方法,在第二类办法中有种不同的方法,……,在第n类办法中有种不同的方法那么完成这件事共有 种不同的方法

2.分步计数原理:做一件事情,完成它需要分成n个步骤,做第一步有种不同的方法,做第二步有种不同的方法,……,做第n步有种不同的方法,那么完成这件事有 种不同的方法

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    书面表达(满分20分)

    国内某家英文报纸设有一个求助信箱(Dr.Helper’s Mailbox)。请根据一份学生现状中列出的部分信息,以高三学生王勇的名义,用英语给Dr.Helper写一封短信。

    学生现状:

    1.每日在校时间9个小时;     2.每日作业时间3到4个小时;

    3.几乎没有课外活动时间;     4.每日睡眠时间不足。

    负担过重原因:

    考试压力大,作业多,家长期望高。

注意:1.词数:120左右;2.信的开头和结尾已经给出,不计入总词数。

    3.参考词汇:负担过重(overload); 压力 (pressure); 期望(expectations)

Dear Dr Helper,

I am a Senior 3 student.I am now in great need of your help because I can hardly stand the great pressure.

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

    I write this letter only to wish that I could have someone to talk to.I am looking forward to your advice.

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    Two teenagers who are lost at sea off the United States for six days were saved yesterday.

    Driscoll, and his best friend, 18-year-old Josh Long, were found on Saturday about 11 km  1   Cape Fear in North Carolina.That was six days and more than 100 miles (161 km) from where they had  2  from Sullivan’s Island, South Carolina, on April 24.

    The boys had  3  a lot of water and were tired, but in pretty good  4  .They set out 5  on a 4.3-metre sailboat on a  6   day when the National Weather Service had warned small boats to stay out of the water.They realized they were  7   almost immediately and tried to swim back to  8  ,  9  the boat along with them.

Within  10  , they were far out at sea.

    “We  11  our fishing equipment on the second day,” Driscoll said.“So we couldn’t catch any fish.”

    The boys’ hopes faded  12   each day.They stood on their boat  13   they saw another boat,  14  .One night they were woken up by  15   coming into the boat.A large ship was very close to them.

    “  16  was like some huge building in the water,” Driscoll said.

    At one point, the boys thought they had gone across the Atlantic Ocean and were close to Africa.17  , they were 179km north of their starting point.A coast guard boat set out to  18   them.

    The boys got up and made some  19  .This time, they were heard.

    “What we have experienced is a completely surprising story of  20  .That’s going to be studied for years to come,” said Richard Goerling, Long’s uncle.“I think the boys have a book to write.”

16.A.at         B.on          C.beside     D.off

17.A.arrived        B.set off          C.returned      D.finished

18.A.drunk        B.lost         C.saved      D.found

19.A.shape      B.health      C.spirit         D.energy

20.A.traveling      B.racing                        C.fishing       D.swimming

21.A.fine        B.rainy                         C.windy       D.snowy

22.A.in trouble      B.in safe                        C.at sea      D.far away

23.A.shore        B.the sea                       C.an island    D.harbor

24.A.driving       B.sailing                        C.pushing     D.pulling

25.A.a week       B.hours                         C.minutes       D.seconds

26.A.bought       B.found          C.lost         D.repaired

27.A.by         B.for        C.on         D.with

28.A.every time      B.once         C.one day      D.sometimes

29.A.jumping and singing                           B.waving and shouting

    C.crying and speaking                           D.screaming and whistling

30.A.a shark       B.a mouse                       C.water         D.some noise

31.A.He         B.This         C.That            D.It

32.A.Instead       B.Therefore        C.But            D.So

33.A.search       B.look for                        C.look into       D.defend

34.A.fire          B.noise                         C.balloons         D.flags

35.A.voyage      B.struggle                        C.survival     D.sailing

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15.________ fresh air, people may start to feel sick.So make sure you open the windows while working.

    A.For the absence of                                   B.In the absence of

    C.In the honour of                    D.In the short of

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14.She published her novels _____ a man’s name, which she thought was easier to gain popularity.

    A.in              B.by             C.under          D.at

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13.Several houses were destroyed to ______ a building.

    A.make away with                                    B.make way for

    C.make for                          D.make out

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12.We will hold a ceremony _______ those killed in battle.

    A.for honour of                       B.in honour of

    C.in honour to                       D.with honour to

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11.We all know that science plays ______ in modern society.

    A.an important role                                    B.important role

    C.important roles                    D.important parts

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