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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

In 1850, about a third of the USA ________    covered by forests.

[  ]

Awere      Bhas been

Cwas       D.×

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

He told me that they had already planted ________ trees. 

[  ]

Aten thousand   Bten thousands   

Cthousand of   Dten thousand of

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

The hole must be ________ for the tree.

[  ]

Aenough large      Blarge enough   

Ctoo large       Dvery large

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

Today, too many trees are still ________ in the world.

[  ]

Acutting down       Bcut down

Cbeing cut down     Dcutted down

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

   ________ , those mountains will be covered with trees.

[  ]

AIn a few years' times      BIn a few years' time

CAfter a few years      DAfter a few years' time

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

The plane rose higher and higher till it could no longer ________ .

[  ]

Ato be seen    Bis seen

Cwas seen     Dbe seen

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

—Tomorrow is my birthday. Can you come to my birthday party?

—OK. I ________.

[  ]

Awould love     Bwill love

Cwould love to    Dam sorry

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

They have to work at once, ________ ?

[  ]

Ahave they   Bdo they 

Cdon't they   Dhaven't they

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

The beautiful hotel is about ________ years old.

[  ]

Ahundred of      Ba hundred

Ca hundred of     Dhundreds

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科目: 來(lái)源: 題型:014

從所給的四個(gè)選項(xiàng)中選擇最佳答案

We love spring ________ there's beautiful flowers everywhere.

[  ]

Abut        Bif   

Cthough       Dbecause

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