题目

某实验小组用如图所示的实验装置来验证楞次定律，当条形磁铁自上而下穿过固定的线圈并远离而去，该过程中（ ）A. 通过电流表的感应电流方向一直是b→G→aB. 通过电流表的感应电流方向是先b→G→a，后a→G→bC. 条形磁铁的加速度一直等于重力加速度D. 条形磁铁的加速度开始小于重力加速度，后大于重力加速度For most people, graduation is an exciting day, but my graduation day was not.I remember that weekend two years ago. Family and friends had flown in from across the country to 1 the celebration. But just like everyone else in my class, I had watched the 2  turn from bad to worse in my senior year. Almost all of us graduates had degrees, but very uncertain 3.The weeks ahead weren’t 4. I knew my small university town couldn’t offer me any opportunities, 5 I packed up my car and drove to Southern California to find work. But what I thought would take a 6  dragged into two, and then four, and 100 job applications later, I found myself in the exact same 7 as I was before.You know that feeling when you wake up in 8? That feeling became a constant in my life. Days felt like weeks, weeks like months, and those many months felt like everlasting9. And the most annoying part was no matter how much I tried, I just couldn’t seem to make any10.So what did I do to keep my good sense? I decided to 11. Something about putting words on a page made everything seem a little clearer — a little brighter. Something about writing gave me 12. And if you want something 13enough, sometimes a little hope is all you 14!I put my thoughts into a children’s book. Beyond the River was the story of an unlikely hero, a little fish, who 15 to give up his dream.And then one day, without any sort of writing degree or contacts in the writing world — just a lot of hard work and determination —I was offered a 16 contract for my first book! After that, things slowly began to fall into 17. I was offered a second book deal. Then, a few months later, I got an interview with the Walt Disney Company and was 18 shortly after.Don’t give up. Even if things look 19now, don’t give up. If you work hard, things will always get better. Often times our dreams lie in wait just a little further upstream ... all we need is the 20  to push beyond the river.1.A.holdB.attendC.prepareD.enjoy2.A.environmentB.climateC.opportunityD.economy3.A.choiceB.dangerC.desireD.future4.A.quietB.busyC.easyD.short5.A.soB.butC.forD.or6.A.dayB.weekC.monthD.year7.A.townB.directionC.situationD.habit8.A.surpriseB.delightC.peaceD.fear9.A.painB.complaintC.loveD.glory10.A.appointmentB.progressC.commitmentD.decision11.A.readB.thinkC.writeD.paint12.A.hopeB.wisdomC.pleasureD.inspiration13.A.hardlyB.badlyC.easilyD.well14.A.lackB.findC.buryD.need15.A.refusedB.managedC.failedD.decided16.A.writingB.translatingC.publishingD.reviewing17.A.ruinB.placeC.piecesD.despair18.A.rewardedB.paidC.hiredD.fired19.A.differentB.unimportantC.strangeD.tough20.A.courageB.chanceC.timeD.dream