脚手架使用中，应定期检查下列项目（）。 A.地基是否积水，底座是否松动，立杆是否悬空

在飞机起飞和降落的过程中，机上人员要张口做吞咽动作或咀嚼口香糖；在遇到巨大声响时，要迅速张口，使咽喉管张开或闭嘴同时堵住双耳，以保持鼓膜内外气压的平衡，以防止 [ ]

A．听小骨损坏

B．听觉神经损坏

C．鼓膜被震破

D．以上都不对

A good way to pass an exam is to work hard every day in a year. You may fail in an exam, if you are lazy for most of the year and then work hard only a few days before the exam. If you are free, read stories in English. Speak English whenever you can. A few days before the exam you should go to bed early. Do not go to bed late at night studying. Before you start the exam, read carefully over the question paper, try to understand the meaning of each question. When you have at last finished your exam, read over your answers. Correct（更正）the mistakes if there are any and be sure that you have not missed anything out.

小题1:A good way to pass an exam is to ______ every day in a year.

A. go to bed early  B. work hard       C. read stories

小题2:If you work hard only a few days before the exam, you may _____the exam.

A. win              B. pass                  C. fail

小题3:A few days before the exam you should ______.

A. go to bed late       B. go to bed early     C. not go to to bed

小题4:When you have finished your paper, you should ______.

A. hand it in at once

B. read over your answers

C. try to understand the meaning of each question

小题5:The best title for this passage is __________.

A. An Important Exam

B. How to Pass an Exam

C. Get Ready for an Exam

在人民法院拍卖房地产估价中第一次拍卖的保留价等于评估价，等于市场价值。( )

强-5单座双发超音速强击机，由（）研制的。

A、南昌飞机制造公司

B、沈阳飞机制造公司

C、成都飞机制造公司

D、以上都不是