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第三节:默写课文 (共10空格,每空格1分,满分10分)

Unit 4 …Finally about 2.6 million years ago some small clever animals, now with hands and feet, (91)_______________________. Thus they have, (92)___________, become the most important animals (93)____________. But they are not (94)_______________________. They are putting too much carbon dioxide into the atmosphere, which (95)_____________________ from the earth into space.

Unit 5 …After (96)_________________, the girl began to realize that Canada is quite empty. At school, they had learned that most Canadians live (97)____________________________of the USA border and Canada's population is only (98)________________________, but now they (99)______________ such an empty country. They (100)______________ a wheat-growing province and saw farms that covered thousands of acres.

91.appeared and spread all over the earth

92.in their turn

93.on the planet

94.looking after the earth very well

95.prevents heat from escaping

96.two days’ travel

97.within a few hundred kilometres

98. slightly over thirty million

99.were amazed to see

100.went through

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