问题 选择题

下列关于生物膜结构和功能的叙述正确的是[ ]

A.细胞核、线粒体、叶绿体都具有双层膜,所以它们的通透性是相同的

B.因为生物膜具有流动性,所以组成膜的各种化学成分在膜中是均匀分布的

C.所有生物膜的结构由外到内依次由糖被、蛋白质、磷脂双分子层组成

D.生物膜在结构和功能上的紧密联系,是细胞成为有机整体的必要

答案

答案:D

完形填空
I consider myself something of an expert on apologies. A quick temper has  me with plenty of opportunities to make them. In one of my earlier  , my mother was telling me“Don’t watch the  when you say, ‘I’m sorry’. Hold your head up and look at the person in the  , so he’ll know you  it. ”

My mother thus made the key point of a(n)  apology: It must be direct. You must never  to be doing something else. You do not  a pile of letters while apologizing to a person  in position after blaming him or her for a mistake that turned out to be your  . You do not apologize to a hostess, whose guest of honor you treat  , by sending flowers the next day without mentioning your bad  .
One of the important things we should do for an  apology is a readiness to  the responsibility for our careless mistakes. We are used to making excuses, which leaves no  for the other person to  us. Since most people are open-hearted, the no-excuse apology leaves both parties feeling  about themselves. That, after all, is the  of every apology. It  little whether the apologizer is wholly or only partly at fault. Answering for one’s  encourages others to take their share of the blame.
小题1:
A.providedB.mixed
C.compared D.treated
小题2:
A.dreamsB.courses
C.memories D.ideas
小题3:
A.sideB.ground
C.wall D.bottom
小题4:
A.mindB.soul
C.face D.eye
小题5:
A.imagine B.enjoy
C.mean D.regret
小题6:
A.usefulB.successful
C.equalD.basic
小题7:
A.pretend B.forget
C.refuseD.expect
小题8:
A.hold on B.put away
C.look through D.pick up
小题9:
A.poorerB.weaker
C.worseD.lower
小题10:
A.faultB.reasonC.resultD.duty
小题11:
A.cruellyB.freely
C.roughlyD.foolishly
小题12:
A.mannersB.excuses
C.effortsD.roles
小题13:
A.active B.effective
C.extraD.easy
小题14:
A.raiseB.perform
C.admitD.bear
小题15:
A.situationB.need
C.sign D.room
小题16:
A.advise B.forgive
C.warn D.blame
小题17:
A.wiserB.warmer
C.betterD.cleverer
小题18:
A.purposeB.method
C.endD.advantage
小题19:
A.caresB.matters
C.dependsD.remains
小题20:
A.facts B.states
C.rightsD.actions
单项选择题