河北省正定县2015
高考英语暑假练习（10）（答案或解析）
阅读下面短文，从每题所给的四个选项(a、b、c和d)中，选出最佳答案。
science can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血压) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer.
any owner will tall you how much joy a pet brings. for some, an animal provides more comfort t
