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6.A. others        B. other     C. else        D. the other

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5.A. whether       B. if        C. unless       D. though

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4.A. in         B. out     C. outside       D. inside

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3.A.but         B. or       C. and        D. yet

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2.A.cause        B. reason     C. because       D .why

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1.A .on         B. in       C. into          D. onto

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10.A.too big     B. too much    C. much too      D. too many

C

All fruit have a bright colour when they are ripe(成熟), but they grown  1 green or dark brown trees, Why? Perhaps you don’t know the   2  . Here is the answer. The tree wants birds  3  animals to see its fruit clearly. The fruit has seeds (种子)  4  .  There will be no young trees  5  the seed is not carried away and put into the ground somewhere   6  . Birds and animals eat the flesh(果肉) of the fruit  7  they see its bright colour and they  8  the seeds here and there. For example, the orange tree  9  the sweet flesh of its fruit and gives it is bright colour  10   some animals may eat it and carry away the seeds.

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9.A.back       B. away      C. off          D into

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8.A. Some      B. All       C. Any        D. None

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7.A. villages     B. towns      C.cities        D.factories

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