题目

如图，在直角坐标系中，已知点，，对△连续作旋转变换，依次得到三角形①、②、③、④…，则三角形的直角顶点的坐标为 ▲   答案：(8040, 0）解析:略  完形填空 　　Some university in North China went on a clean-up campaign(运动)last week to remind students of their duty to be responsible on campus(校园)．The school 　　1　　 a photo exhibit on notice boards outside its dining hall, showing 　　2　　 of “uncivil behavior”． 　　The pictures, taken on campus, showed：　　3　　 classroom desks, walls and library books; 　　4　　 dorms; game-loving students misusing the Internet equipment; and lovers during close moments． 　　Many students 　　5　　 an interest and almost everyone knew about the show by the second day．It was 　　6　　 by the school’s Youth League, which spent half a year preparing it．“We hope the pictures can help students 　　7　　 what is happening around them．We won’t punish the students in the pictures, 　　8　　 we want to remind them of their 　　9　　 to keep the campus clean,” said Youth League Secretary He Yu． 　　Many students did agree that carving on desks and 　　10　　 activities were “uncivil behavior”．“The school once asked us to behave 　　11　　 in daily life and now the pictures have a stronger effect．The show is the first try and it can 　　12　　 a deep impression,” said Wang． 　　Another student, a boy named Lu, said the show had taught him “a good 　　13　　”．He said that he hadn’t 　　14　　 attention to classrooms’ cleanliness in the past and once wrote on a desk and left some waste around his seat． 　　“It’s our duty to keep the campus clean．We should do something to 　　15　　 the situation,” he added．However, some students thought it not 　　16　　 to invade(侵犯)the privacy of people in close situations．“It’s common for lovers to kiss or have some bodily 　　17　　．It’s natural and it’s not right for the school to 　　18　　 it ‘uncivil behavior’,” said Yang． 　　“The 　　19　　 have shown students’ private moments．They may feel embarrassed(尴尬)　　20　　 they’re recognized by others,” said a freshman named Lou． (1) [　　] A． ran B． took C． held D． gave (2) [　　] A． harmfulness B． disadvantages C． experiences D． examples (3) [　　] A． repaired B． damaged C． painted D． burned (4) [　　] A． empty B． dirty C． beautiful D． crowded (5) [　　] A． became B． drew C． showed D． got (6) [　　] A． praised B． found C． opened D． organized (7) [　　] A． see B． imagine C． watch D． stop (8) [　　] A． however B． so C． for D． but (9) [　　] A． duty B． knowledge C． memory D． purpose (10) [　　] A． important B． similar C． same D． personal (11) [　　] A． hardly B． gratefully C． well D． helpfully (12) [　　] A． miss B． develop C． require D． leave (13) [　　] A． lesson B． text C． passage D． way (14) [　　] A． fixed B． expected C． attracted D． paid (15) [　　] A． prevent B． improve C． change D． notice (16) [　　] A． reasonable B． fair C． proper D． formal (17) [　　] A． contact B． connection C． relation D． exchange (18) [　　] A． call B． say C． explain D． prove (19) [　　] A． actions B． situations C． pictures D． cleanliness (20) [　　] A． as though B． if C． so that D． although