已知代数式x2+3x+5的值为7，那么代数式3x2+9x-2的值是（ ） A．0

句子改错（每小题1分，共10分，每句只有一处错误）。

多一个词：把多余的词用斜线（／）划掉.

缺一个词：在缺词处加一个漏字符号（∧），在该词下边写出改正后的词

错一个词：在错的词下划一横线，在该词下边写出改正后的词。

小题1:Do you want a friend whom you could tell everything to , as your deepest feelings and thoughts?

小题2:I am having any trouble with my classmates at the moment.

小题3:At first the English speaking in England between about AD450 and 1150 was very

different from the English we speak today.

小题4:Although many Americans move a lot, but they still recognize and understand each

other.

小题5:Wang Wei soon got them interesting in cycling.

小题6:The army organized teams to dig out those who was trapped and to bury the dead.

小题7:At one point we were so highly that we found ourselves cycling through clouds.

小题8:Here are my neighbours who home was destroyed by the earthquake.

小题9:He was generous with his time , for whom I was grateful.

小题10:My sister and I have dreamed about take a great bike trip..

三个相同的光滑圆柱体a、b、c静止地叠放在两个等高的支架上，其横截面如图所示。a、b，的圆心与左支架的支点在一条直线上；a、c的圆心与右支架的支点在一条直线上。设三个圆柱体的质量均为m，则

A．两支架对圆柱体b、c的支持力大小均为

B．两支架对圆柱体b、c的支持力大小均为

C．b、c之间一定有弹力

D．b、c之间可能无弹力

家住上海的王甲继承其父遗产房屋三间，后将其改为铺面经营小商品。在北京工作的王乙（王甲之弟）知道此事后，认为自己并没有放弃继承权，故与王甲交涉。王甲对此不予理睬，王乙便向法院提起诉讼。案件受理后，李某向法院主张自己作为被继承人的养子，拥有继承权，并通过法定程序以有独立请求权第三人的身份参加了诉讼。诉讼中，李某认为自己与王氏两兄弟关系不错，担心打官司会伤了和气，便退出了诉讼。不久，李认为退出不妥，又向法院要求参加诉讼。针对本案的具体情况和诉讼法理论，下列哪一种观点是正确的？

A．作为诉讼参加人，李某不能重复参加本案诉讼

B．根据诚信原则，李某不能再参加本案诉讼

C．在最后一次庭审辩论终结之前，李某均可以参加本案诉讼

D．只有在开庭审理之前，李某才能再参加本案诉讼

简述政府利益分析说。