题目内容
III. 课文内容填空(共5分,每空0.5分)
Finally about 2.6 million years ago some small clever animals now with hands and feet, appeared and 1___________ all over the earth. Thus they have, in their 2________, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the 3_____________, which 4______________ heat from 5_______________ from the earth into space. As a result of this, many 6_________ believe the earth 7________ become too hot to live on. So 8________ life will continue on the earth for millions of years to come will 9_______ on whether this problem can be 10_______.
1.spread 2.turn 3.atmosphere 4.prevents 5.escaping 6.scientists 7.may 8.whether 9.depend 10.solved