题目

如图为蔗糖酶作用机理示意图，下列说法正确的是（） A . 该示意图说明酶具有高效性 B . 图示过程能够保证酶保持较高的催化活性 C . 一分子蔗糖可以水解为2分子葡萄糖 D . 蔗糖酶不能催化麦芽糖水解是因为它们不能结合形成酶﹣底物复合物 答案：DI consider myself something of an expert on apologies. A quick temper has   36  me with plenty of opportunities to make them. In one of my earlier   37 , my mother was telling me “Don’t watch the   38  when you say, ‘I’m sorry’. Hold your head up and look at the person in the   39 , so he’ll know you   40  it.”My mother thus made the key point of a(n)   41  apology: It must be direct. You must never   42  to be doing something else. You do not   43  a pile of letters while apologizing to a person   44   in position after blaming him or her for a mistake that turned out to be your   45 . You do not apologize to a hostess, whose guest of honor you treat   46 , by sending flowers the next day without mentioning your bad   47 .One of the important things we should do for an   48  apology is a readiness to   49  the responsibility for our careless mistakes. We are used to making excuses, which leaves no   50  for the other person to   51  us. Since most people are open-hearted, the no-excuse apology leaves both parties feeling   52  about themselves. That , after all, is the   53  of every apology. It   54  little whether the apologizer is wholly or only partly at fault. Answering for one’s   55  encourages others to take their share of the blame.小题1:A．providedB．mixedC．comparedD．treated小题2:A．dreams B．coursesC．memoriesD．ideas小题3:A．side B．groundC．wallD．bottom小题4:A．mindB．soul C．faceD．eye小题5:A．imagineB．enjoy C．mean D．regret小题6:A．useful B．successful C．equal D．basic小题7:A．pretend B．forget C．refuse D．expect小题8:A．hold on B．put away C．look through D．pick up小题9:A．poorer B．weaker C．worse D．lower小题10:A．fault B．reason C．result D．duty小题11:A．cruelly B．freely C．roughly D．foolishly小题12:A．manners B．excuses C．efforts D．roles小题13:A．active B．effective C．extra D．easy小题14:A．raise B．perform C．admit D．bear小题15:A．situation B．need C．sign D．room小题16:A．advise B．forgive C．warn D．blame小题17:A．wiser B．warmer C．better D．cleverer小题18:A．purpose B．method C．end D．advantage小题19:A．caresB．matters C．depends D．remains小题20:A．facts B．states C．rights D．actions