圆x2+y2-ax+2=0与直线l相切于点A（3，1），则直线l的方程为（ ）

短文改错（共10小题，每小题1分，满分10分）

Get a good education is more important today than    小题1:．________

ever before．In Canada mostly children attend public  小题2:____________

schools．Public schools are mainly found by governments小题3:________

through tax income．Students in Canada taught in       小题4:_______

English and French．The rests of Canadian children    小题5:_____________

attend private schools, that are supported mainly by fees小题6:_____________

paying by parents．By law, the children must attend    小题7:______________

the school from age 5 to 16．There are several different小题8:____________

levels in the Canadian education system．The first was  小题9:_____________

called Elementary Schools, which include kindergartens  小题10:__________

through grade 7 or 8．

请简述《安全文明施工实施细则》中“安全文明施工要求及实施”应包括哪些主要内容。

债券市场对于股票市场具有领先的指示作用，而( )则更为领先。

A．短期国债市场

B．长期国债市场

C．长期国债期货市场

D．股票指数期货

举证责任

甲因行窃被失主发现，为逃跑而与失主扭打在一起。此时，甲的好友乙路过见状即上前对失主进行拳打脚踢，致失主重伤。下列说法正确的是（）。

A、乙构成盗窃罪的共犯

B、乙构成抢劫罪的共犯

C、乙构成故意伤害罪

D、乙不构成犯罪