惠州二模惠州2017级高三第二次调研考试英语练习题.doc

PAGE 8 惠州市2017届高三第二次调研考试 英 语 2016.10 本试卷分选择题和非选择题两部分。满分120分（最终成绩按总分135分进 行折算），考试用时120分钟。 注意事项： 1. 本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分。 2. 答题前，考生务必将自己的姓名，准考证号填写在答题卡相应的位置。 3. 全部答案应在答题卡上完成，答在本试卷上无效。 4. 考试结束后，将答题卡交回。 第I卷 第二部分 阅读理解（共两节，满分40分） 第一节 （共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 A Flying can be fun and exciting, no matter what you choose to do. But have you ever thought about what happens on the plane? Here are some of the most interesting things that happen. Do planes drop human waste while in flight? When you flush a toilet on a plane at an altitude of 30,000 feet, there must be a question on your mind: “Is this about to land on a farmer’s house?” Take it easy. A plane’s toilets cannot be emptied in the sky. The waste is stored in tanks on board and can only be operated by the ground crew. However, why is news like “blue ice falling out of a plane” reported? Is blue ice human waste? Stories about blue ice are true but rarely happen. The FAA said some lavatory holding tanks have a blue chemical in them. If a tank leaks high in the air, the water freezes once it hits the outside air, and melts before it lands on the ground. Is turbulence (颠簸) dangerous? It’s scary, uncomfortable and spills your drink. But is turbulence something you really need to worry about? Absolutely not. It’s part of flying, and it isn’t dangerous. Turbulence is caused when two masses of air hit one another at different speeds. Wind, thunderstorms and closeness to mountains are all possible reasons. Despite how dangerous it feels, turbulence won’t crash your plane. Even in extremely rough air, the wing is not going to break off. Why are plane windows round? If you have traveled by plane before, you may have noticed that every plane window has a round design. This isn’t to make the plane look good. It’s for the safety of everyone on board. As the airplane flies higher and higher, the outside atmosphe