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    B Have you ever wondered how plants produce other plants? Pollen is a yellow powder that contains the male cell of plants.It is found on stalk-like parts of the plant called stsmens .Then ,when pollen is carried to the pistils,or female parts ,of the plant,pollination takes place.Pollination is the way in which plants are fertilized.In order for most plants to reproduce or make new plants ,pollination is necessary. Pollination can take place in many ways .the wind helps pollinate corn .The stamens of the corn plant grow above the leaves ,and the wind blows the pollen from the stamens onto the pistils. Sometimes the stamens grow inside the flowers of a plant .Insects help to pollinate these plants .The monarch buttery ,for example,feeds on milk-weed nectar.While the butterfly is feeding,its legs get covered with pollen .When the butterfly moves to other milkweed plants,some of the pollen comes off its feet.The pollen lands on the plants’ pistils and fertilizes them. People who grow fruit often use hand-pollination.They do this only with healthy trees.The pollen from these trees is collected and placed,by hand ,on the pistils of other healthy trees.Hand-pollination usually results in larger and better-tasting fruit .With this method,the pollination is not simply left to chance. 59.The female part of a plant is called the . A. cell B.stalk C.stamen D.pistil pared to hand –pollination,the pollination of milkweed is . A. left to chance B.carefully controlled B. done by the wind D.more scientific 61.Why does hand-pollination ,the pollination of milkweed is . A. It is safer than waiting for the wind to do it B. The pollen ripens faster C. Only healthy trees are selected as parents D. The pollination takes place unexpectedly 【查看更多】

     

    题目列表(包括答案和解析)

    －Hi. Linda, what are you doing?

    －Hi, Bob, I am preparing for the test tomorrow.

    －    61   

    －Well, the reading room is full and the classroom is too noisy.     62   

    －I am afraid not. I feel very nervous . We don’t have much time left.

    －We can prepare together.    63     

    －Good idea. Let me ask first. Name three European countries.

    －Easy, France, Germany and Russia, I can even say more.

    －     64     Now it’s your turn to ask question .

    －Ok, what are the seven continents of the world?

    －Asia, Europe, Africa, and err…I really can’t remember them all.

    －    _65__ 

    A.      Maybe that can help.

    B.      Have you passed your test yet?

    C.      It seems you are well prepared.

    D.     Are you ready for the text?

    E.      But why are you here in the garden?

    F.      Don’t worry ,you still have time.

    G.     Then we can have a good time.

     

    61._________  62.__________ 63. __________ 64.__________ 65.__________

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    A. Found: This afternoon at the reading-room of our school, I happened to find a black purse, inside of which there is some money, a telephone card and two photos etc. Loser is expected to come to Room 306 to for it.

    B. Have you lost your keys? Some keys were found under the tree at the school gate. Go to the headmaster’s office for them.

    C. Schoolbag found: Found on the playground on the afternoon of December 12 when I was watching a basketball match there. Inside were some keys, a wallet in which there was some money, and some books. Come to Class 7, Senior Grade 3, please.

    D. A red pen. Found in the men’s toilet on the second floor of the teaching building. A name on the body of the pen. Come to the teachers’ office on the second floor for it, please.

    E A watch is waiting for its owner. A golden watch was found at the parking lot the day before yesterday. If you’re the owner, telephone 84567565.

    请阅读下列寻物启事的信息，然后匹配遗失者和失物招领：

    51. Rose. Rose can’t find her keys. She thinks she lost them at the school gate.

    52. Johnson. Johnson is looking for his black purse. There is money, a telephone card and two photos in it.

    53. Jenny. Jenny lost her golden watch. She doesn’t remember where and when she lost it.

    54. Timmy. Timmy is looking for his red pen with his name on its back. He lost it at school.

    55. Mary. Mary lost her schoolbag on the playground on December 12. There are keys to the classroom and a wallet and two books.

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    情景对话（每题1分，满分5分）

    Mrs. Hunter: Jack,___61_____

    Jack: Next year, we hope, mother, but we can’t be sure about it. Finding a house is a difficulty.

    Mrs. Hunter : Have you made any inquiries(咨询) yet, Jack?

    Jack: Yes. __62___ . There are plenty of furnished flats, and furnished houses too, but the rents for these are very high. I couldn’t possibly afford them on my present salary.

    Mrs. Hunter: What would it cost to buy a plot of land and build a house?___63___

    Jack: No. I haven’t even thought of it . That’ll cost at least four thousand pounds. It’s no use our thinking about building a house.

    Mrs. Hunter: And even if you had a house, there’d be the furniture and all sorts of other things.

    Jack:___64_____ Anne and I have been saving up. We’ve saved a few hundred pounds between us

    and could buy furniture--- enough to start with. But the house is the problem.

    Mrs. Hunter : __65____ Jack?

    Jack : Oh, quite a small one. A living room and a kitchen. We’d like a dining room of course. Two bedrooms and a bathroom.

    A.Have you any idea?

    B.have you and Anne decided when you are going to get married ?

    C.Yes, I know.

    D.It’s almost impossible to find a suitable house to rent , unfurnished.

    E.No, I’m trying to make more money to pay for the rents.

    F.What size of house would you want ?

    G.Excuse me, may I ask a question ?

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    ---- How long ____ at this job?

        ---- Since 1990.

    A. were you employed           B. have you been employed

    C. had you been employed        D. will you be employed

     

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    23.  --- Where ____ the recorder? I can’t see it anywhere.

    --- I ____ it right here. But now it’s gone.

    did you put; have set up     B. have you put; put

    C. had you put; was putting     D. were you putting; have put

     

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