题目

如果两个角的差的绝对值等于，就称这两个角互为反余角，其中一个角叫做另一个角的反余角，例如，，，，则和互为反余角，其中是的反余角，也是的反余角．如图为直线AB上一点，于点O，于点O，则的反余角是______，的反余角是______；若一个角的反余角等于它的补角的，求这个角．如图2，O为直线AB上一点，，将绕着点O以每秒角的速度逆时针旋转得，同时射线OP从射线OA的位置出发绕点O以每秒角的速度逆时针旋转，当射线OP与射线OB重合时旋转同时停 完形填空 　　I remember vividly① that first English class in the last term of high school．We boys(there were no girls in the school)were 　　1　　 expectantly(期待地)for the new teacher to appear．Before long, through the door came a tall ordinary-looking man 　　2　　 about 40．He said shyly, “Good afternoon, gentlemen．” 　　His 　　3　　 had a surprising tone of respect, almost 　　4　　 he were addressing② the Supreme Court(最高法院)　　5　　 a group of youngsters．He wrote his 　　6　　 on the blackboard－Wilier T．Stone, 　　7　　 sat on the front of his desk． 　　“Gentlemen,” he began, “we are now this term－your last term－to continue your study of 　　8　　．I know we shall enjoy learning wide and 　　9　　 one another．We are going to learn 　　10　　 about journalism③ and how to get out your weekly school paper．　　11　　, we are going to try to feel the 　　12　　 of good literature④．Maybe some of us will really get 　　13　　 in reading and writing．A man who reads lives 　　14　　．A man who 　　15　　 walks the earth with a blindfold(蒙眼布，眼罩)．If I had to put all my 　　16　　 into a single word, it would be：browse(广泛浏览)．” 　　Mr．Stone went on like that, 　　17　　 in a friendly and understanding tone．The 　　18　　 of the class came 　　19　　 soon．And we boys had to leave the classroom 　　20　　 an unexpected feeling of excitement． (1) [　　] A． waiting B． looking C． asking D． calling (2) [　　] A． for B． of C． at D． on (3) [　　] A． spirit B． voice C． appearance D． attitude (4) [　　] A． as B． if C． as if D． after (5) [　　] A． besides B． expect C． instead D． instead of (6) [　　] A． address B． telephone C． name D． word (7) [　　] A． then B． but C． so D． only (8) [　　] A． maths B． chemistry C． English D． physics (9) [　　] A． among B． for C． from D． of (10) [　　] A． something B． anything C． nothing D． all (11) [　　] A． Really B． Especially C． Possibly D． Truly (12) [　　] A． joy B． sorrow C． anger D． excitement (13) [　　] A． interesting B． interested C． moving D． moved (14) [　　] A． life B． a life C． much life D． many lives (15) [　　] A． does B． doesn’t C． must D． needn’t (16) [　　] A． praise B． trust C． dvice D． romise (17) [　　] A． speaking B． spoke C． telling D． told (18) [　　] A． beginning B． end C． middle D． time (19) [　　] A． again B． just C． too much D． much too (20) [　　] A． on B． of C． with D． at