1. 短语填空

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1. （1） As we can see, some theme parks are amusing educational.
3. （2） As we all know, it is human activities that the global warming.
5. （3） Dr.Banding and his assistant are a cure for diabetes at present.
7. （4） Obesity and a sedentary lifestyle have been an increased risk of heart disease.
9. （5） The invention and the use of cell phones have great changes in our daily life.
11. （6） Since human beings presented in the world, thousands of kinds of animals have .
13. （7）  China's largest nature reserve, Changbaishan is a wonderful tourist attraction.
15. （8） The teacher accepted the award the whole class.