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- 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...
- The earth moves around the sun.
- 共用题干 第三篇More Than a Ride to SchoolThe National Education Association claims,The school bus is a mir...
- 共用题干 第二篇The Cherokee NationLong before the white man came to America,the land belonged to the Ameri...
- 共用题干 第一篇U. S. Blacks Hard-hit by CancerDeath rates for cancer are falling for all Americans,but bla...
- I grabbed his arm and made him turn to look at me.
- 共用题干 When Our Eyes Serve Our StomachOur senses arent just delivering a strict view of whats going o...
- 共用题干 Sharks Perform a Service for Earths WatersIt is hard to get people to think of sharks as anyth...
- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...