2015浙江省宁海县
高考英语阅读理解暑假练习（4）（答案） a a sign can be found in the front yard of a house in the us. the people living here want to let their dog play outside and ensure it won’t run into the street. so, they hire a company to set up an “invisible fence”, an electric wire buried in the ground around the yard. the dog wears a special collar and when it walks near to the “fenc
