普通潜水艇从海面下潜但未全部没入海水的过程中,它所受的浮力逐渐   (选填“变大

题型:填空题

问题:

普通潜水艇从海面下潜但未全部没入海水的过程中,它所受的浮力逐渐   (选填“变大”、“不变”或“变小”);若潜水艇悬浮在海水中,当用压缩空气把水舱中的海水排出一部分时,潜水艇将   (选填“上浮”或“下沉”);在露出海面之前,潜水艇所受的浮力将    (选填“变大”、“不变”或“变小”).

考点:浮力的应用
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设A、B均为2阶矩阵,A+,B+分别为A、B的伴随矩阵.若|A|=2,|B|=3,则分块矩阵

的伴随矩阵为______

A.


B.


C.


D.

题型:填空题

学习了《匆匆》一课,你想到了什么?请你用比喻的形式写写你对时间的看法。    

  时间像_______________________________________________

  时间像_______________________________________________

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Perhaps the only test score that I remember is the 41. I was in high school. The test was the final for the class. It was a rather  36 test. I didn’t know how  37 I had done but I knew there were things on   38  that I didn’t know.
I remember   39   waiting for the result. When Mr. Bales  40 my paper on my desk, I was   41   . There in big  42  numbers, circled to draw attention, was my grade — 41! I  43 my paper so that others couldn’t see it. A 41 was not   44  that you wanted your classmates to see. Finally, Mr. Bales stood behind the desk and   45  the class. “The grades were not very good;   46 of you passed,” he announced. “ The highest grade in the class was a 41, so all of you failed.”
A 41. That was me. Suddenly my dismal(阴沉的) face didn’t look quite so bad. I had the highest grade. I felt a lot   47  . As soon as I got home, my mother asked me, “How did you do on your test?” “I made a 41,” I said. My mother’s    48  changed suddenly. “You failed.” “But I had the highest grade in the class!” I replied. “ I don’t    49  what everyone else had. You failed. It doesn’t matter if everyone else failed too; what matters is what you do,” my mother  50  answered.
For years, I thought that was a harsh judgment. My mother was always that 51 . It didn’t matter what the other kids did; it only mattered what I did and  52 I did it excellently.
We often don’t understand the wisdom of good parents until we ourselves stand   53 the parenting shoes. My mother’s philosophy(人生态度)has   54   me throughout life. The path of the crowd is wide but the path to pass the tests of life is   55  and there are very few people on it.
小题1:
A.easyB.difficult C.excitingD.disappointed
小题2:
A.much B.goodC.wellD.long
小题3:
A.thisB.themC.it D.one
小题4:
A.happilyB.anxiouslyC.excitedlyD.calmly
小题5:
A.fell B.handedC.dropped D.lay
小题6:
A.excitedB.worriedC.delightedD.shocked
小题7:
A.redB.blackC.blueD.green
小题8:
A.collectedB.gatheredC.hidD.kept
小题9:
A.everythingB.somethingC.anything D.nothing
小题10:
A.talkedB.declaredC.announcedD.addressed
小题11:
A.someB.eachC.none D.most
小题12:
A.worse B.betterC.bestD.good
小题13:
A.looksB.appearanceC.eyesD.expression
小题14:
A.understandB.careC.mindD.want
小题15:
A.rudelyB.politelyC.firmlyD.impatiently
小题16:
A.methodB.mannerC.behaviorD.way
小题17:
A.thisB.thatC.whichD.what
小题18:
A.onB.atC.inD.of
小题19:
A.takenB.broughtC.fetchedD.carried
小题20:
A.wideB.deepC.narrowD.straight
题型:填空题

为一些可能从来不会发生的情况开发一套复杂的脚本是浪费时间和资源,你是否同意这种说法,解释你的理由。

题型:填空题

什么叫失速?

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