检查连杆上的裂纹通常采用（）。A．眼看的方法 B．超声波探伤方法 C．磁力探伤方

如图所示，一带电粒子以水平初速度v0(v0＜)先后进入方向互相垂直的匀强电场和匀强磁场区域，已知电场方向竖直向下，两个区域的宽度相同且紧邻在一起.在带电粒子穿过电场和磁场的过程中（其所受重力忽略不计），电场和磁场对粒子所做的总功为W1；若把电场和磁场正交重叠，如图乙所示，粒子仍以初速度v0穿过重叠场区，在带电粒子穿过电场和磁场的过程中，电场和磁场对粒子所做的总功为W2.比较W1和W2，有（   ）

A．一定是W1＞W2

B．一定是W1=W2

C．一定是W1＜W2

D．可能是W1＜W2,也可能是W1＞W2

阅读下面的文言文，完成6～9 题。 答严厚舆秀才论为师道书 柳宗元严生足下：得生书，言为师之说，怪仆所作《师友箴》与《答韦中立书》，欲变仆不为师之志，而屈己为弟子。凡仆所为二文，其卒果不异。仆之所避者名也，所忧者其实也，实不可一日忘。仆聊歌以为箴，行且求中以益己,栗栗不敢暇，又不敢自谓有可师乎人者耳。若乃名者，方为薄世笑骂，仆脆怯，尤不足当也。内不足为，外不足当，众口虽恳恳见迫，其若吾子何？实之要，二文中皆是也，吾子其详读之，仆见解不出此。吾子所云仲尼之说，岂易耶？仲尼可学不可为也。学之至，斯则仲尼矣；未至而欲行仲尼之事，若宋襄公好霸而败国，卒中矢而死。仲尼岂易言耶？ 马融、郑玄者，二子独章句师耳。今世固不少章句师，仆幸非其人。吾子欲之，其有乐而望吾子者矣。言道、讲古、穷文辞以为师，则固吾属事。仆才能勇敢不如韩退之，故又不为人师。人之所见有同异，吾子无以韩责我。若曰仆拒千百人，又非也。仆之所拒，拒为师弟子名，而不敢当其礼者也。若言道、讲古、穷文辞，有来问我者，吾岂尝瞋目闭口耶？吾子文甚畅远，恢恢乎其辟大路将疾驰也。攻其车，肥其马，长其策，调其六辔，中道之行大都，舍是又奚师欤？亟谋于知道者而考诸古，师不乏矣。幸而亟来，终日与吾子言，不敢倦，不敢爱，不敢肆。苟去其名，全其实，以其余易其不足，亦可交以为师矣。如此，无世俗累而有益乎己，古今未有好道而避是者。宗元白。(选自《柳宗元集》,有删节)

下列“其”字的用法与其他三项不同的一项是 (3 分) （ ）

A．仆之所避者名也，所忧者其实也

B．吾子其详读之，仆见解不出此

C．今世固不少章句师，仆幸非其人

D．仆之所拒，拒为师弟子名，而不敢当其礼者也

简述转移自助具的种类。

我国刑法对未遂犯的处罚原则是( )。

A．可以比照既遂犯从轻或减轻处罚

B．应当比照既遂犯从轻或免除处罚

C．从轻处罚

D．减轻处罚

Dance critic from Europe: The improved quality of ballet in the United States is the result of more Europeans’ teaching ballet in the United States than ever before. I know the proportion of teachers who were born and trained in Europe has gone up among ballet teachers in the United States, because last year, on my trip to New York, more of the ballet teachers I met were from Europe—born and trained there—than ever before.
Which of the following identifies a questionable assumption made by the dance critic’s reasoning

A．The argument overlooks the possibility that some ballet teachers in the United States could have been born in Europe but trained in the United States.

B．The argument assumes that the ballet teachers whom the critic met last year on the critic’s trip to New York were a generally typical group of such teachers.

C．The argument assumes that the teaching of ballet in the United States is superior to the teaching of ballet in Europe.

D．Other possible reasons for the improved mental attitudes of United States dancers are not examined.

E．(E) The argument assumes that dancers born and trained in Europe are typically more talented than dancers born and trained in the United States.