The last time we had great fun was _____ we were visiting the Water Park.

   A. where        B. how         C. when         D. why

We all enjoy the colors of autumn leaves. Did you ever wonder how and why a fall leaf changes color? Where do the yellows and oranges come from? To answer those questions, we first have to understand what leaves are and what they do.

      Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas called carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose, which is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. The way plants turn water and carbon dioxide into sugar is called photosynthesis, which means " putting together with light. " A chemical called chlorophyll helps make photosynthesis happen. Chlorophyll is what gives plants their green color.

      As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to begin getting ready for winter.

      During winter, there is not enough light or water for photosynthesis. The trees will rest, and live off the food they stored during summer. They begin to shut down their food-making factories. The green chlorophyll disappears from the leaves. As the bright green fades away, we begin to see yellow and orange colors. Small a-mounts of these colors have been in the leaves all along. Covered up by the green chlorophyll, we just can't see them in summer.

     The bright reds and purples we see in leaves are made mostly in the fall. In some trees, like maples, glucose is trapped in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn cause the leaves turn this glucose into a red color. The brown color of trees like oaks is made from wastes left in the leaves.

     It is the combination of all these things that make the beautiful colors we enjoy in the fall.

The writer asked two questions in the beginning in order to        .

    A. persuade readers to believe something

    B. introduce the topic of the passage

    C. get the readers excited

D. offer something to think over

Which of the following is True according to the passage?

    A. Trees don't change colours with seasons.

    B. Trees can still perform photosynthesis well in winter.

    C. Trees have colours like yellow and orange even in summer.

D. Trees don't need food in winter.

Photosynthesis is a way that ___________________________.

A. plants change water and carbon dioxide into sugar

B. plants turn water and carbon dioxide into sugar with the help of sunlight

C. plants use glucose as food for energy and growing

D. chlorophyll is a great help

Which is the best title for this passage?

    A. Colorful trees in autumn            B. Mysteries of tree colors

C. Do you enjoy tree colors?           D. Wonderful colors in autumn

单词拼写：(10’)

66.She made an ___________(道歉) to him.

67.She was told not to ___________(传播) this secret aroud.

68.The children were____________(低语) in the corner.

69.They went there on a ____________(星期六).

70.My mother always_________(对待) us like children.

71.The_________(火炬) was lighted.

72.Going aroud under sea water is an ______________(难忘的)experience.

73.She believes she’s finally foud true____________(幸福)

74.This will be the ________(最后的) chance.

75.It is bad _________(礼貌) to speak with your mouth full.

完形填空（共20小题；每小题1. 5分，满分30分）

       阅读下面短文，从短文后所给各题四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

       Mars is not, it seems, the dry old planet we once believed    （36）    ．Astronauts who are     （37）    to go there in the next decade may find plenty    （38）   water to slake （消除） their thirst．And with water present the    （39）    of finding some sort of life of Mars are    （40）    brighter．

       This is the view of forty geologists who have been analyzing    （41）    of pictures and other scientific    （42）    obtained by robot explorers in the sixties and seventies．

       To begin with, scientists thought the Red planet was as    （43）    as the Moon    （44）    dust storms swirling over vast sandy    （45）    ．But now the picture is very different    （46）    mountains and valleys carved by    （47）    glaciers and rivers rushing and rumbling deep underground．

       In a report on the analysis of the Martian pictures Dr．Michael Car of the U．S．Geological Survey comments: “I am convinced    （48）    lots of water on Mars．” Any surface water will be in the    （49）    of ice．But it could save explorers from    （50）    to take so much    （51）    with them．

       The report says    （52）   Mars probably had a warmer climate in ages    （53）    due to its axis （轴） having been more tilted （倾斜） towards the sun．

       （54）     signs of plant or animal life have been detected by instruments landed on Mars,    （55）    the landing vehicles have been sent there for a few years．

36．A．it is        B．it     C．it to be    D．was

37．A．expected        B．hoped     C．required         D．sent

38．A．to    B．of    C．more       D．in

39．A．chances  B．openings        C．occasions        D．possibility

40．A．quite       B．very        C．much      D．more

41．A．a few      B．many      C．thousand        D．thousands

42．A．skills      B．news       C．intelligence     D．information

43．A．peaceful         B．quiet       C．lifeless    D．dead

44．A．of    B．with        C．for  D．through

45．A．deserts    B．mountains      C．rivers      D．seas

46．A．from       B．between         C．for  D．with

47．A．energetic        B．great       C．heavy      D．powerful

48．A．there’s    B．there’re  C．here’s      D．here’re

49．A．appearance     B．way        C．form       D．shape

50．A．have       B．having    C．carry       D．carrying

51．A．water      B．ice  C．equipment      D．oxygen

52．A．what       B．if     C．how        D．that

53．A．pass        B．past        C．ago         D．before

54．A．Not        B．No  C．Nor        D．Never

55．A．probably        B．perhaps  C．supposed        D．although

Stepping into a pool of water is common enough, but who could ever imagine stepping into a pool of fish? In February of 1974, Bill Tapp, an Australian farmer, saw a rain of fish that covered his farm.How surprised he must have been!

    What caused this strange occurrence? This is a question that had long puzzled people who study fish. The answer turned out to be a combination of wind and storm．   

    When it is spring in the northern part of the world, it is fall in Australia. Throughout the autumn season, terrible storms arise and rains flood the land. The strong winds sweep over Australia like huge vacuum cleaners (吸尘器), collecting seaweed, pieces of wood, and even schools of fish. Strong winds may carry these bits of nature for many miles before vacuum dropping them on fields, houses, and astonished people．

    Although they seem unusual, fish-falls occur frequently in Australia. When Bill Tapp was asked to describe the scene of fish, he remarked, “They look like millions of dead birds falling down. ” His statement is not surprising. The wonders of the natural world are as common as rain. Nature, with its infinite wonders, can create waterfalls that flow upward and fish that fall out of the sky．

What could be the feelings of Bill Tapp the moment he saw the rain of fish?

A. excited    B． scared    C． calm      D． amazed

Fish-falls occur in Australia ________．

A. quite often  B. on large farms C. only in winter  D  when the air is calm

The word “infinite” is closest in meaning to _________．

   A． easy     B. difficult    C. countless   D． dangerous

What might be the reasons of the rain of fish?

A. Vacuum cleaners        B. Strong wind

  C. Wind and storm         D. It is still a puzzle

What is this passage about?

A．A sad story．           B. Australia's northern part．

C．A rain of fish．         D. The damage done by floods．