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- 共用题干 The FamilyThe structure of a family takes different forms around the world and even in the sam...
- 共用题干 You Need Courage!Shortly after I began a career in business,I learned that Carl Weatherup,pres...
- 共用题干 When Our Eyes Serve Our StomachOur senses arent just delivering a strict view of whats going o...
- We have never seen such gorgeous hills.
- 共用题干 Ecosystem1. The word “ecosystem” is short for ecological（生态的）system. An ecosystem is where liv...
- 共用题干 第一篇U. S. Blacks Hard-hit by CancerDeath rates for cancer are falling for all Americans,but bla...
- 共用题干 Teaching Math,Teaching AnxietyIn a new study about the way kids learn math in elementary schoo...
- 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 Animals “Sixth Sense”A tsunami（海啸）was triggered（引发）by an earthquake in the Indian Ocean in Dec...
- 共用题干 Forests for CitiesYou are standing in a beautiful forest in Japan. The air is clean and smells...