【单选题】
___This is Mr Smith speaking now.
A. Who are you
B. Who is that
C. Who are you calling
D. What do you want to say
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【单选题】
- I was worried about my maths, but Mr. Brown gave me an A.___
A. Don't worry about it.
B. Congratulations! That's a difficult course.
C. Mr. Brown is very good.
D. Good luck to you！
【单选题】
-Would you go to the concert with me?___, but I'm very busy now.
A. I'd like to
B. Sure
C. No problem
D. Certainly
【单选题】
-I'll be away on a business trip. Would you mind looking at my cat?Not at all. _______.
A. I have no time
B. I'd rather not
C. You can leave
D. I'd be happy to
【单选题】
- Hi, Jim! Nice to meet you.____.
A. Certainly
B. Many thanks
C. OK
D. Nice to meet you, too
【单选题】
- Hello, may I speak to Mike?_____
A. Who are you?
B. Sorry, he isn't in.
C. Thank you very much.
D. Yes, here you are.
【单选题】
- Will you join us for lunch?____.
A. No, I won't
B. Yes, with pleasure
C. Yes, please
D. Yes, help yourself
【单选题】
- Thank you for your great dinner. I really enjoyed it._____you enjoyed it.
A. I'm so glad
B. I'm sorry
C. What a pity
D. Surprisingly
【单选题】
- I heard Susan surprised her teacher by working hard. Yes, ___
A. her teacher worked hard.
B. Susan worked hard.
C. the teacher was surprising.
D. Susan was surprised.
【单选题】
- Peter, don't step on the grass_______.
A. It doesn't matter
B. I can't do it
C. Don't worry
D. Sorry, I won't do it again
【单选题】
- How was your journey to Paris? - ____
A. It went very well.
B. I flew there.
C. I love Paris.
D. Thank you for asking.
【单选题】
- I'm sorry for being late, Mr Lt______.
A. All right
B. That's right
C. Not at all
D. Never mind
【单选题】
- Happy birthday to you! ___!
A. Happy birthday to you
B. I'm very glad
C. That's all right
D. Thank you
【单选题】
- Do you like country music?___.
A. Yes, I like basketball a lot
B. It's far too crowded
C. Yes, I'm crazy about it
D. Oh, it's funny
【单选题】
- Have a cup of tea, ____? Thanks a lot.
A. don't you
B. haven't you
C. shall we
D. will you
【单选题】
- Thank God．It's Friday again．A nice weekend!___.
A. Me too
B. Yes，I'll be free then
C. That's all right
D. The same to you
【单选题】
— Write to me when you get home. OK, I ______.
A. must
B. should
C. will
D. can
【单选题】
Tom is so talkative. I’m sure you'll soon get tired ___ him.
A. of
B. with
C. at
D. on
【单选题】
I don't know ____ to deal with such matter.
A. what
B. how
C. which
D. /
【单选题】
___ is your girl friend like? She is very kind and good-looking.
A. How
B. What
C. Which
D. Who
【单选题】
He ___ driving me home, even though I told him I lived nearby.
A. insisted on
B. insisted at
C. insisted that
D. insisted in
【单选题】
We came finally ___the conclusion that she has been telling lies all the time.
A. of
B. into
C. to
D. at
【单选题】
I won’t make the___mistake next time.
A. like
B. same
C. near
D. similar
【单选题】
He ___lives in the house where he was born.
A. already
B. yet
C. still
D. ever
【单选题】
I am not used to speaking ___ public.
【单选题】
I didn’t know what to do, but then an idea suddenly ___to me.
A. appeared
B. happened
C. occurred
D. emerged
【单选题】
Measles （麻疹） ___ a long time to get over.
A. spend
B. spends
C. take
D. takes
【单选题】
A pair of spectacles ___ what I need at the moment.
A. is
B. are
C. has
D. have
【单选题】
— Five days ___ too long for me to wait.
A. was
B. were
C. is
D. are
【单选题】
You had better ___ a doctor as soon as possible.
A. seeing
B. saw
C. see
D. seen
【单选题】
The boy is not happy at the new school. He has ___ friends there.
A. few
B. a few
C. little
D. a little
【单选题】
I fell and hurt myself while I ___ basketball yesterday.
A. was playing
B. am playing
C. play
D. played
【单选题】
Tom ___ more than twenty pounds on the novel.
A. spent
B. paid
C. cost
D. took
【单选题】
Don't forget ____ the window before leaving the room.
A. to have closed
B. to close
C. having closed
D. closing
【单选题】
Twenty people were___ wounded in the air crash.
A. quickly
B. wrongly
C. bitterly
D. seriously
【单选题】
The top of the Great Wall is ___ for five horses to go side by side.
A. wide
B. so wide
C. wide enough
D. enough wide
【单选题】
We’ve missed the last bus. I'm afraid we have no ___but to take a taxi.
A. way
B. choice
C. possibility
D. selection
【单选题】
Nancy is considered to be ____ the other students in her class.
A. less intelligent
B. the most intelligent
C. intelligent as well
D. as intelligent as
【单选题】
It's _____ that he was wrong.
A. clearly
B. clarity
C. clear
D. clearing
【单选题】
There ____ a book and some magazines on the desk.
A. is
B. be
C. have
D. has
【单选题】
She is not only my classmate _____ also my good friend.
A. or
B. but
C. and
D. too
推荐试题
【单选题】
[2]要改变分析天平的灵敏度可调节___。
A. 吊耳
B. 平衡螺钉
C. 拔杆
D. 感量螺钉
【单选题】
[2]衡量样本平均值的离散程庋时，应采用___。
A. 标准偏差
B. 相对标准偏差
C. 极差
D. 平均值的标准偏差
【单选题】
[2]当置信度为0.95时，测得Al2O3的μ置信区间为(35.21±0.10)%，其意义是___。
A. 在所测定的数据中有95%在此区间内
B. 若再进行测定，将有95%的数据落人此区间内
C. 一总体平均值μ落入此区间的概率为0.95
D. 在此区间内包含μ值的概率为0.95
【单选题】
[2]由计算器计算9.25×0.21334÷(1.200×100)的结果为0.0164449，按有效数字规则将结果修约为___。
A. 0.016445
B. 0.01645
C. 0.01644
D. 0.0164
【单选题】
[2] 16℃时1mL水的质量为0.99780g，在此温度下校正l0ml单标线移液管，称得其放出的纯水质量为10.04g，此移液管在20℃时的校正值是___。
A. -0.02 mL
B. +0.02 mL
C. -0.06 mL
D. +0.06 mL
【判断题】
[2]容量瓶与移液管不配套会引起偶然误差
【判断题】
[2]在没有系统误差的前提条件下，总体平均值就是真实值
【判断题】
[3]准确度表示分析结果与真实值接近的程度。它们之间的差别越大，则准确度越高
【判断题】
[2]相对误差会随着测量值的增大而减小，所以消耗标准溶液的量多误差小
【判断题】
[1]误差是指测定值与真实值之间的差值，误差相等时说明测定结果的准确度相等
【判断题】
[2]0.650×100=0.630×(100+V)中求出的V有3位有效数字
【判断题】
[2]在分析数据中，所有的“0”都是有效数字
【判断题】
[3]在3～10次的分析测定中，离群值的取舍常用4d法检验；显著性差异的检验方法在分析工作中常用的是t检验法和F检验法
【判断题】
[3]做空白试验，可以减少滴定分析中的偶然误差
【判断题】
[3]进行滴定操作前，要将滴定管尖处的液滴靠进锥形瓶中
【判断题】
[2]12℃时0.1mol／L某标准溶液的温度补正值为+1.3，滴定用去26.35mL，校正为20℃时的体积是26.32mL
【判断题】
[2]通常移液管的标称容积与实际容积之间存在误差，需用一个系数R予以校正，简单地可表示为V=RW
【判断题】
[3]半微量分析的试样取用量一般为0.001～0.0lg
【判断题】
[2]11.48g换算为毫克的正确写法是11480mg
【判断题】
[2]偏差表示测定结果偏离真实值的程度
【判断题】
[3]增加测定次教可以提高实验的准确度
【判断题】
[3]有效数字当中不包括最后一位可疑数字
【判断题】
[2]使用滴定管时，每次滴定应从“0”分度开始，是为了减少偶然误差
【判断题】
[2]做的平行次数越多，结果的相对误差越小
【判断题】
[2]错pH=3.05的有效数字是三位
【判断题】
[1]分析纯的NaCl试剂，如不做任何处理，用来标定AgNO3溶液的浓度，结果会偏高
【判断题】
[2]测定结果精密度好，不一定准确度高
【判断题】
[2]平均偏差常用来表示一组测量数据的分散程度
【判断题】
[2]Q检验法适用于测定次数为3≤n≤10时的测试
【判断题】
[2]天平使用过程中要避免震动、潮湿、阳光直射及腐蚀性气体
【判断题】
[1]滴定管、移液管和容星瓶校准的方法有称量法和相对校准法
【判断题】
[2]误差是指测定值与真实值之间的差，误差的大小说明分析结果准确度的高低
【判断题】
[1]测定石灰中铁的质量分数(%)，已知4次测定结果为：1.59，1.53，1.54和1.83。利用Q检验法判断出第四个结果应弃去。已知Q0.90,4=0.76
【判断题】
[3]允许误差也称为公差，是指进行多次测定所得到的一系列数据中最大值与最小值的允许界限（也即极差）
【判断题】
[1]对pH=3.05的有效数字是两位
【判断题】
[1]化学分析中，置信度越大，置信区间就越大
【判断题】
[3]微量滴定管及半微量滴定管用于消耗标准滴定溶液较少的微量及半微量测定
【判断题】
[2]移液管的体积校正：一支10.00mI对(20℃)的移液管，放出的水在20℃时称量为9.9814g，已知该温度时1mL的水质量为0.99718g，则此移液管在校准后的体积为10.01mL
