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- The sea turtles natural habitat has been considerably reduced.
- 共用题干 Every Dog Has His SayKimiko Fukuda always wondered what her dog was trying to say. Whenever sh...
- 共用题干 The RoadrunnerThe roadrunner（走雀）lives in the desert zone of the southwestern United States and...
- An Essential Scientific Process All life on the earth depends upon green plants. Using sunlight, th...
- 共用题干 Learn about Light1 .Ancient civilizations were amazed by the existence of light for thousands ...
- 共用题干 Early Ideas about the Universe1 Early man got his ideas about the universe by looking at the s...
- During the past ten years there have been dramatic changes in the international situation.
- 共用题干 第二篇Good Table MannersManners play an important part in making a favorable impression at the di...
- 共用题干 The iPad1 The iPad is a tablet computer（平板电脑）designed and developed by Apple. It is par-ticula...
- These factors interact intimately and cannot be separated.