A: Mum, _____ I watch TV now? B: No, you

题型:选择题

问题:

A: Mum, _____ I watch TV now?

B: No, you          . You _____ finish your homework first. [ ]

A. may, can't, must

B. can, can't, may

C. must, needn't, must

D. may, mustn't, can

考点:情态动词
题型:选择题

配制汞标准溶液时,为防止汞浓度的改变,按《化妆品卫生规范》操作的是()

A.稀释后,立刻分装于小容器内,并保存于-18℃

B.配制时,加入硝酸使最终浓度为0.5mol/L

C.配制时,加入硝酸使最终浓度为5%

D.配制时,加入硝酸-铬酸钾使最终浓度分别为5%和0.5%

E.配制时,加入硝酸重铬酸钾使最终浓度分别为5%和0.05%

题型:选择题

下列各项中,符合城市维护建设税纳税地点规定的有()。

A.取得输油收入的管道局,为管道局所在地

B.流动经营无固定地点的单位,为单位注册地

C.流动经营无固定地点的个人,为居住所在地

D.代征代扣"三税"的单位和个人,为代征代扣地

题型:选择题

I'm really _______, because my backpack is lost. [ ]

A. sad

B. angry

C. worried

D. serious

题型:选择题
A certain student passed all his examinations. Then he went to college to  21  his studies. There he wrote down his  22 for a course in English, but after the first 23 , he didn’t go to it any more.
The English lecturer 24_this student was always absent (缺席的) and thought he had  25_to another course, so he was  26  when he saw the boy’s name on the list of students who wanted to take the English  27at the end of this year.
The lecturer had  28 a difficult paper, which followed his  29 closely, and he was eager (热切的) to see  30 this student would answer the questions. He  31__the boy’s answers would be very bad, but when they  32 him and he examined them  33 , he was able to find only one small mistake in them. As this surprised him greatly, he  34 the paper repeatedly but still couldn’t find more than one mistake, so he  35 for the student to question him about it.
When he came and sat down, the lecturer asked him, “I  36 you came to my first lecture and you’ve been absent from all the others. But I’ve examined your  37 carefully and I’ve found only one small mistake in it. I’m curious (好奇的) to know your  38 .”
“I’m very  39  about that mistake,” answered the student. “After the examination, I  40  what I should have done. I would not have made that mistake if I had not been confused by your first lecture.” 
小题1:
A.valueB.continueC.improveD.begin
小题2:
A.questions B.adviceC.problemsD.name
小题3:
A.week B.lecture C.meetD.sight
小题4:
A.astonished B.regrettedC.noticed D.believed
小题5:
A.led B.devotedC.goneD.changed
小题6:
A.surprised B.angryC.pleasedD.unhappy
小题7:
A.testB.subjectC.noteD.course
小题8:
A.discovered B.preparedC.invented D.found
小题9:
A.ideasB.sensesC.lecturesD.texts
小题10:
A.whenB.whatC.why D.how
小题11:
A.hopedB.provedC.expectedD.wished
小题12:
A.showed B.gave C.handedD.reached
小题13:
A.carelessly B.carefullyC.slowlyD.happily
小题14:
A.enjoyedB.keptC.didD.examined
小题15:
A.caredB.called C.sentD.looked
小题16:
A.promiseB.know C.advise D.guess
小题17:
A.lessonsB.paperC.notebookD.exercises
小题18:
A.wisdom B.experienceC.methodD.explanation
小题19:
A.gladB.proudC.content D.sorry
小题20:
A.realizedB.understoodC.rememberedD.suffered
题型:选择题

引起燃烧器回火的主要原因是()

A、空气流速过大

B、燃料气流速过大

C、燃料气压力过低

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