已知某一次函数的图象经过点A(0,2),B(1,3),c(a,1)三点;求这个一次函数的解析式及a的值。
解:设一次函数的解析式为
则由条件得
解之得:
即一次函数的解析式为:
根据句意及首字母或汉语提示,写出各句中所缺单词的正确形式。(每空一词,共10分)
小题1:I will (感激)it if you could come to help me .
小题2: The (志愿者)for community service are doing a good job .
小题3:The government provides (可移动的)libraries for that country .
小题4: My father (检查)the tree and found that there was indeed a branch broken off .
小题5:In (如释重负), the girl took a deep breath .
小题6:P , I think the team who won first place cheated .
小题7:The 21st century is the century of information t .
小题8:You can’t c with others in the job market if you don’t have a special skill .
小题9:A nature r is an area of land where wildlife is officially protected .
小题10:Wearing sunglasses can p your eyes from the sun .
肢体关节疼痛,重着,肿胀,手足活动不灵,肌肤麻木不仁。此属痹证的何类型()。
A.行痹
B.痛痹
C.着痹
D.热痹
E.以上都不是