如图所示，电路连接完好，闭合开关，导体棒ab在水平金属导轨上向左（或右）移动，这说明 ____，根据这一原理制成了 ____机．

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一对双胞胎(同卵生)的兄弟俩因工作环境不同，肤色相差很大，其变异是(   )

印度诗人泰戈尔曾写道：“在使人们断绝邪恶的斗争中，或许他（指甘地）不会成功，或许他会像佛陀和耶稣一样遭到失败，但是他的一生对子孙是一种教益，为此，人民永远牢记着他。”诗人如此评价甘地是因为他                       
①多次组织群众性的非暴力不合作运动    ②被印度人民尊称为“圣雄”、“国父”
③领导印度人民实现了民族独立             ④创立的非暴力不合作理论成为宝贵的思想财富

阅读下面短文，掌握大意。然后从A.B.C.D四个选项中选出最佳选项 
I was waiting for the bus when I met the woman. “You look   26  . Come and sit here,” she said. “ 27   are you going?”
“I don’t know. I just want to catch a  28    and see what it will be like at the end.”
“I’m afraid you’ll see  29   there. Why don’t you enjoy the sights on the way?”
“How can I do that while my heart’s   30   ?” I asked sadly. My best friend had left me.
The woman seemed to understand my feeling. “Don’t cry, little girl. I’ve had a similar experience to you. Thirty-five   31   ago, my husband left our three children and me. I was deadly sad. I decided to kill myself and the children, so I took    32   to the sea.   33  ，they seemed to know what would happen, so they   34   loudly. Their cry suddenly woke me 35   . How could I  36    my hope to live for one of life’s problems? After that, I worked hard to raise the children. Now they all live   37    and one of them has his own family.
Then the woman gave me a   38  , “We should never wait for the door to   39     before us. We should find the key to the  40   or try to find another way”
The bus came and I got on it with a smile

【小题1】 A．tired B．excited C．happy D．well

【小题2】 A．What B．How C．Where D．When

【小题3】 A．train B．bus C．boat D．plane

【小题4】 A．nothing B．everything C．something D．anything

【小题5】 A．smiling B．breaking C．singing D．dancing

【小题6】 A．days B．weeks C．months D．years

【小题7】 A．her B．them C．him D．it

【小题8】 A．So B．Or C．Besides D．However

【小题9】 A．laughed B．talked C．spoke D．cried

【小题10】 A．in B．out C．up D．down

【小题11】 A．give away B．give up C．get up D．stand up

【小题12】 A．happily B．sadly C．badly D．hopeless

【小题13】 A．cry B．shout C．hit D．smile

【小题14】 A．open B．close C．lock D．mend

【小题15】 A．classroom B．office C．door D．shop

阅读《马说》，完成后面各题。

    世有伯乐，然后有千里马。千里马常有，而伯乐不常有。故虽有名马，祗辱于奴隶人之手，骈死于槽枥之间，不以千里称也。

    马之千里者，一食或尽粟一石。食马者不知其能千里而食也。是马也，虽有千里之能，食不饱，力不足，才美不外见，且欲与常马等不可得，安求其能千里也？

    策之不以其道，食之不能尽其材，呜之而不能通其意，执策而临之，曰：“天下无马！”呜呼！其真无马邪？其真不知马也。