题目内容
三角高程测量的基本思想是根据三角原理，利用由测站向照准点所观测的水平角和它们之间的距离，计算测站点与照准点之间的高差。（）
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控制网的精度越高，点位越密，测量的工作量越大，施测工期也就越长。（）
控制网的起算数据可通过与已有国家控制网或城市控制网联测获得。（）
you will hear a monologue. While you listen, fill out the blank with a phrase or sentence you've just heard. Some of the information has been given to you in the text. You will hear the recording twice. You now have 25 seconds to read the text below. He is big. He always has been, over six feet, with what slump of the shoulders and tuck in the neck big men in this country often affect, (1) to apologize for being above the democratic norm (2).(In high school and at college he played varsity basketball. In high school he was senior class president.) And he looks healthy enough, blue-eyed behind his beard, like a trapper or (3),acquainted with silences. He also grins a lot. Odd, then, to have noticed earlier—at the house, when he took off his shabby coat to play Ping-Pong—that the white arms were very thin. The coat may have been a comment. This,(4), is southern California, where every man is an artist, an advertiser of himself;(5)and every object potted; where even the statues seem to wear socks. The entire population ambies, in polyesters, toward a Taco Bell. To wear a brown shabby cloth coat in southern California is to admit something. So he hash't been getting much exercise. (6) have elected him president of any class. At the house they avoided him. Or, since he was too big to be avoided entirely, they treated his presence as a kind of odor to pass through hurriedly, to be safe on the other side. They behaved like cats. Of course, he ignored them. (7) they were up to more than just protecting themselves from (8) . Children are expert readers of grins. His grin is intermittent. The dimples twitch on and off; between the teeth are bared; above them, the blue eyes disappear in a wince. This grin isn't connected to any humor (9) . It may be a tic. It could also be a function of some metronome made on Mars. It registers (10) . We aren't listening to the same music. 7（）
在三角高程测量中，垂直角不大的情况下，对高差中误差起主要作用的是垂直角观测误差。（）
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