職稱英語理工類閱讀理解備考之練習題

            雕龍文庫 分享 時間: 收藏本文

            職稱英語理工類閱讀理解備考之練習題

              Learning how to fly took nature millions of years of trial and errorbut a winged robot has cracked it in only a few hours, using the same evolutionary principles.  To begin with, the robot just twitched and jerked erratically. But, gradually, it made movements that gained height. At first , it cheated simply standing on its wing tips was one early short cut. After three hours, however, the robot abandoned such methods in favor of a more effective flapping technique, where it rotated its wings through 90 degrees and raised them before twisting them back to the horizontal and pushing down.  The robot had metre-long wings made from balsa wood and covered with a light plastic film. Small motors on the robot let it move its wings forwards or backwards, up or down or twist them in either direction.  A computer program fed the robot random instructions, at the rate of 20 per second, to test its flapping abilities. Each instruction told the robot either to do nothing or to move the wings slightly in the various directions.  1.Which of the following is NOT true of what is mentioned about the winged robot in the second paragraph?  B. The two professors of CUT tested whether the winged robot could learn to fly.  D. The two professors of CUT tried to find out if the robot could fly by itself.  A. It rotated its wings through 90 degrees.  C. It was twitched and broke down.  3.Which of the following is nearest to Peter Bentleys view on the winged robot?  B. The winged robot did not have a mortor.  D. The robot could fly if it were lighter.  A. Two vertical rods. B. A movement detector.  5.What does the process appearing in the last paragraph refer to?  B. Sending instructions to the robot.  D. All the above.

              

              Learning how to fly took nature millions of years of trial and errorbut a winged robot has cracked it in only a few hours, using the same evolutionary principles.  To begin with, the robot just twitched and jerked erratically. But, gradually, it made movements that gained height. At first , it cheated simply standing on its wing tips was one early short cut. After three hours, however, the robot abandoned such methods in favor of a more effective flapping technique, where it rotated its wings through 90 degrees and raised them before twisting them back to the horizontal and pushing down.  The robot had metre-long wings made from balsa wood and covered with a light plastic film. Small motors on the robot let it move its wings forwards or backwards, up or down or twist them in either direction.  A computer program fed the robot random instructions, at the rate of 20 per second, to test its flapping abilities. Each instruction told the robot either to do nothing or to move the wings slightly in the various directions.  1.Which of the following is NOT true of what is mentioned about the winged robot in the second paragraph?  B. The two professors of CUT tested whether the winged robot could learn to fly.  D. The two professors of CUT tried to find out if the robot could fly by itself.  A. It rotated its wings through 90 degrees.  C. It was twitched and broke down.  3.Which of the following is nearest to Peter Bentleys view on the winged robot?  B. The winged robot did not have a mortor.  D. The robot could fly if it were lighter.  A. Two vertical rods. B. A movement detector.  5.What does the process appearing in the last paragraph refer to?  B. Sending instructions to the robot.  D. All the above.

              

            主站蜘蛛池模板: 无码av免费毛片一区二区| 欧美日韩精品一区二区在线观看 | 国产主播一区二区三区| 成人无码AV一区二区| 国产精品日韩一区二区三区| 国精产品一区一区三区免费视频| 在线精品视频一区二区| 日韩在线不卡免费视频一区| 国产激情一区二区三区成人91| 少妇人妻精品一区二区| 国产手机精品一区二区| 老熟妇仑乱一区二区视頻| 消息称老熟妇乱视频一区二区| 成人精品视频一区二区三区| 视频一区视频二区日韩专区| 日韩三级一区二区| 精品日韩一区二区三区视频| 国产成人一区二区三中文| 久久久久人妻精品一区| 国产电影一区二区| 亚洲一区欧洲一区| 天堂一区人妻无码| 成人免费视频一区| 国产主播一区二区三区| 女人和拘做受全程看视频日本综合a一区二区视频 | 国产午夜一区二区在线观看| 亚洲丰满熟女一区二区哦| 精品国产一区二区三区香蕉| 精品亚洲AV无码一区二区| 亚洲综合一区二区三区四区五区| 亚洲视频一区网站| 国产欧美色一区二区三区| 国产无人区一区二区三区| 欧洲精品码一区二区三区免费看| 波多野结衣精品一区二区三区| 日韩视频在线观看一区二区| 久久久久久一区国产精品| 国产一区二区三区久久| 91成人爽a毛片一区二区| 国产精品高清视亚洲一区二区| 日韩精品一区在线|