下列命题的逆命题不成立的是( ) A.同旁内角互补,两直线平行 B.平行四边形的

题型:选择题

问题:

下列命题的逆命题不成立的是(  )

A.同旁内角互补,两直线平行

B.平行四边形的对边相等

C.若两个角是直角,则它们相等

D.若两个实数的平方相等,则它们相等

考点:命题,定理
题型:选择题
When I was about 12 years old, I really wanted a new bike! I __31__ my parents my birthday wish, but I knew there was little hope because my family could __32__ have that money.
  On my birthday my parents told me they had my __33__ outside in the back yard. At once, I __34__ out to the yard. There was my bike, __35__ it wasn’t the bike that I thought it would be. This one was pink, old and worn with age. It was so __36__! I thought I __37__ my parents’ feelings because I could see the disappointment __38__ their faces and I was sure they could see it on mine. I __39__ the old bike and rode it, feeling __40__ that I had made my parents feel this way. So I put on a smile, rode as fast as I could and didn’ t __41__.
  As time went by, I began to understand my parents gave me __42__ much more than just a rusty(生锈的)old bike. They gave me a life lesson about __43__. When you give something out of love, it doesn’ t matter what it is in fact. What matters is the love that is in it. I like to remember this __44__ because giving a gift is not about money. It’s about how much love you can feel from it. Do remember, a gift that __45__ two dollars isn’t any less valuable(有价值的)than one that costs one hundred dollars, or even more.
小题1:
A.talkedB.spokeC.saidD.told
小题2:
A.hardlyB.quicklyC.slowlyD.easily
小题3:
A.guitarB.giftC.cakeD.card
小题4:
A.rushedB.rodeC.climbedD.came
小题5:
A.andB.orC.butD.because
小题6:
A.excitingB.interestingC.relaxingD.disappointing
小题7:
A.likedB.hatedC.hurtD.thanked
小题8:
A.onB.inC.atD.for
小题9:
A.got inB.got onC.got offD.got up
小题10:
A.surprisedB.excitedC.happyD.bad
小题11:
A.look aheadB.look backC.come upD.come down
小题12:
A.anythingB.nothingC.somethingD.everything
小题13:
A.loveB.moneyC.friendshipD.knowledge
小题14:
A.ideaB.newsC.adviceD.story
小题15:
A.spendsB.costsC.paysD.offers
题型:选择题

采用止血带止血,止血带持续时间一般不超过(),太长可导致肌体坏死。

A.1h

B.2h

C.3h

D.4h

题型:选择题

起钻中所发生的缩径、键槽等卡钻,可以在卡点处倒开后,接入下击器,再采用()解卡。

A、浴井解卡法

B、震击解卡法

C、倒螺纹套铣法

D、爆炸松螺纹法

题型:选择题

全部工作量按费用分类正确的是()。

A、A类属于劳务人工时 

B、B类属于其他费用 

C、C类属于直接材料费 

D、D类属于管理及非工资费用

题型:选择题

斯密认为,商品的价值是由商品在交换中所能购买到的劳动量决定的。这一观点()。

A、正确地揭示了价值的源泉

B、正确地揭示了价值与交换价值的关系

C、颠倒了价值与交换价值的关系

D、掩盖了无产阶级与资产阶级之间的经济关系

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