高一英语暑假作业及答案练习试题

【摘要】为了帮助考生们了解高中学习信息，精品学习网分享了高一英语暑假作业及答案练习试题，供您参考!

1.2.3.4.5. No one knows _______ how the earth began, ___ it happened so long ago. After that, atoms began to form and ________ to create stars and other bodies. For several billion years after the ‘Big Bang’, the earth was still just ____________ dust. The earth became so violent that it was not clear whether the ________ would last or not. They were _________ to produce carbon, nitrogen, water vapour and other ______ , whichwere to make the earth’s ______________.6. What is even more important is that as the earth ______________ , water began to appearon its surface.7. It wasn’t immediately obvious that water was to be _____________ to the development oflife.8. This produced a_______ reaction, which made it possible for life to develop.9. Many millions of years later, thefirst _______ small plants began toappear on thesurface of the water.10. They_______ and filled the oceans andseas with oxygen, which _________ the laterdevelopment of earlyshellfish and all sorts of fish.11. Later when the plants grew into forests, ______ appeared for the first time.12. Theyproduced young ________ by laying eggs.13. Dinosaurslaid eggs too and _________ on the earth for more than 140 million years.14. Why theysuddenly disappeared still remainsa __________.15. This disappearance made possible __________ mammals on the earth.16. So whether life will continue on the earth for millions of years to come will _______whetherthis problem can be solved.17. Going eastward, you'll pass mountains and thousands of lakes and forests,__________ wide rivers and large cities.18. Some people have the idea that you can cross Canada ___________ five days, butthey forget the fact that Canada is 5,500 kilometers from coast to coast.19. Its population is increasing____________.20. It is so wet there that the trees are extremely tall, some_________ over 90 meters.21. Cowboys from all over the world come to _________ in the Stampede.22. Many of them have _________ riding wild horses and can win thousands of dollars inprizes.23. They went through a wheat-growing ___________ and saw farms that coveredthousands of acres.24. The girls were surprised ___________ ocean ships can sail up the Great Lakes.25. Because of the Great Lakes, they learned, Canada has more _________ than anyother country in the world.26. It has one-third of the world's total fresh water, and _________ is in the Great Lakes.27. That night as they slept, the train ____________ the top of Lake Superior, through thegreat forests and southward towards Toronto.28. Their next stop was Calgary, which is _________ for the Calgary Stampede.29. If you go to Hollywood and ____________ the trendy coffee shops and restaurants, it’sunlikely you’ll meet your favorite film star.30. Dennis is a ‘movie’ star------well,_________.31. On his _________ Chevrolet ___________ he has five Oscars and other awards he has won.