【简答题】Doctors have known for a long time that extremely loud noises can cause hearing damage or loss. The noise can be the sound of a jet airplane or machines in factories of loud music or other common soun...
【单选题】根据下列短文,回答下列各题。 The cars,trucks,and campers cause many problems.The cars make too much noise.People cannot hear each other talk.The best view of Yosemite Fails is from the parking lot.The new plan is t...