某块砖在一对平衡力作用下运动,则该块砖( ) A.机械能一定不变,动能一定不变

题型:选择题

问题:

某块砖在一对平衡力作用下运动,则该块砖(  )

A.机械能一定不变,动能一定不变

B.机械能可能改变,动能一定不变

C.机械能可能改变,动能可能改变

D.机械能一定不变,动能可能改变

考点:机械能与其他形式能量的转化牛顿第一定律
题型:选择题

下列各句中加点的熟语使用恰当的一句是

A.反美武装的恐吓使伊拉克众多候选人和参选政党对竞选活动讳莫如深,没有电视辩论,也没有竞选集会,甚至连候选人的名单都没有向选民公布。

B.2月14日,在耸人听闻的辽宁孙家湾矿难中,有203人遇难,29人受伤,12人下落不明。

C.俗话说“天子不差饿兵”,承包商拖欠农民工工资的做法,从情理上是说不通的,法律上更不容许。

D.现在一些青年学生是马上不知马下苦,饱汉不知饿汉饥,拥有大好青春,却不努力学习。

题型:选择题

It was lunchtime and I walked into a small branch office on the West Side. I had come to   36  a checking account. The only officer on   37  was a fortyish black man, standing   38  a small counter from a young white boy who was wearing a V-necked sweater. I think I was especially   39  of the boy because he looked more like a kid from a prep school than a   40  in a West Side bank.
The boy continued to   41  my attention because of what happened next. He was holding an open savings-account book and   42  an expression of disappointment. “But I don’t understand. I opened the account myself, so why can’t I   43  any money?” the boy said, his voice breaking.
“I know it is, but those are the rules. I’ve already explained to you that a fourteen-year-old is not   44  to withdraw money without a letter from his parents,” the officer explained patiently.
Suddenly I noticed the account had a series of small deposits and withdraws. Then I questioned the officer, “How do you   45  that? Why did you let him withdraw money before, but not now?” He looked   46 . “Because the tellers were not aware of his age before and now they are. It’s really very   47 .” I turned to the boy with a shrug. “You’re really getting   48 ,” I said. “You ought to get your parents to come in here and   49 .” The boy looked destroyed.   50 , he put his savings book in a rear-pocket and walked out of the bank.
The officer turned to me. “You know,” he said, “you really shouldn’t have got   51 .” I couldn’t believe what this idiot was saying. “We were   52  this morning that some neighborhood bully has been shaking down (敲诈) this boy for more than a month. The other guy was   53  him to take money out every week and hand it over. The poor kid was   54  too scared to tell anyone. Anyway, the police are on the case and they’ll probably make a(n)  55  today."
“You mean there is no rule about being too young to withdraw money from a savings account?”
“Not that I ever heard of. Now, sir, what can we do for you?”
小题1:
A.makeB.openC.buyD.choose
小题2:
A.dutyB.boardC.displayD.show
小题3:
A.onB.afterC.over D.across
小题4:
A.sureB.proudC.awareD.afraid
小题5:
A.guardB.customerC.clerkD.manager
小题6:
A.attractB.payC.attachD.control
小题7:
A.puttingB.writingC.sayingD.wearing
小题8:
A.borrowB.depositC.withdrawD.use
小题9:
A.toldB.inspiredC.encouragedD.allowed
小题10:
A.argue B.explainC.answerD.declare
小题11:
A.annoyedB.disappointedC.excitedD.amused
小题12:
A.easyB.amazingC.fantasticD.simple
小题13:
A.arrangedB.convincedC.cheatedD.caught
小题14:
A.protestB.promiseC.prohibitD.prepare
小题15:
A.Excitedly B.SilentlyC.CheerfullyD.Nervously
小题16:
A.interactedB.interruptedC.involvedD.infected
小题17:
A.askedB.discovered C.suggestedD.informed
小题18:
A.rushingB.forcingC.requestingD.begging
小题19:
A.hardlyB.unwillinglyC.apparentlyD.eagerly
小题20:
A.arrestB.sentence C.apologyD.difference
题型:选择题

患者,女性,25岁,大便时突发右侧肢体活动不灵。查体:意识清,失语,二尖瓣区可闻隆隆样舒张期杂音,心房纤颤,右侧偏瘫,上肢重于下肢,右偏身痛觉减退。最可能的诊断是()

A.脑栓塞

B.脑出血

C.蛛网膜下隙出血

D.脑血栓形成

E.短暂性脑缺血发作

题型:选择题

关系数据库管理系统应能实现的专门运算包括

A.排序、索引、统计

B.选择、投影、连接

C.关联、更新、排序

D.显示、打印、制表

题型:选择题

全身性水肿的原因不包括

A.心源性水肿

B.肾源性水肿

C.肝源性水肿

D.下肢静脉血栓

E.粘液性水肿

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