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基于可见光的语音信息传输实验装置(M题)

《英语语音》期末考试试卷及答案

《英语语音》考试试卷（A卷、闭卷） I. , (15%) （）1. A. B. C. D. （）2. A. B. C. D. （）3. A. B. C. D. （）4. A. B. C. D. （）5. A. B. C. （）6. A. B. C. D. （）7. A. B. C. D. （）8. A. B. C. D. （）9. A. B. C. D. （）10. A. B. C. D. . (15%) （）1. A. B. C. D. （）2. A. B. C. D. （）3. A. B. C. D. （）4. A. B. C. D. （）5. A. B. C. D. （）6. A. B. C. D. （）7. A. B. C. D. （）8. A. B. C. D. （）9. A. B.

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5. , : 1) ; 2) . V. . (20%). 1. “” . A. B. C. 2. . , . A. B. C. a 3. . A. B. C. 4. “”, “”, “”“”, “c”“k” . A. B. C. 5. “ .” . A. ’s . B. ’s . C. . 6. I’ . A. B. a C. 7. a ? A. B. C. 8. ? A. B. C. 9. a . A. B. C. ? 10. :

PEP小学英语语音专项练习题

一、小学语音专项练习二、判断下列各组单词划线部分发音是否相同，相同的打“√”，不相同的打“×”。( ) 1. A. why B. what C. white D. who ( ) 2. A. river B. farmer C. teacher D. doctor ( ) 3. A. skirt B. shirt C. girl D. nurse ( ) 4. A. thin B. thank C. that D. math ( ) 5. A. wash B. make C. lake D. away ( ) 6. A. how B. now C. mouth D. town ( ) 7. A. beef B. tea C. peach D. meat ( ) 8. A. cook B. foot C. look D. book ( ) 9. A. box B. dog C. clock D. over ( ) 10. A. potato B. tomato C. tofu D. yellow 二、选择与例子相同发音的单词，把编号填写在题前括号 ( ) 1. how A. brown B. yellow C. window ( ) 2. who A. why B.whose C. white ( ) 3. what A.where B. whole C.whom ( ) 4. this A. math B.thank C.clothes ( ) 5. that A. math B. water C. path ( ) 6. lake A.wash B. table C.can ( ) 7. like A. fish B. active C.kind ( ) 8. fresh A. behind B. chess C.closet ( ) 9. over A.closet B. close https://www.wendangku.net/doc/1911722286.html,puter ( )10.water A away B.watch C trash 三、找出发音不同的一项。 ( ) 1. A. why B. what C. white D. who ( ) 2. A. river B. farmer C. doctor D. short ( ) 3. A. skirt B.dinner C. girl D. nurse ( ) 4. A. thin B. thank C. that D. math ( ) 5. A. wash B. make C. lake D. day ( ) 6. A. how B. now C.window D. town ( ) 7. A. beef B. tea C. peach D. road ( ) 8. A. cook B. foot C. look D. book ( ) 9. A. box B. dog C. clock D. over 找出发音不同的一项 ( )1. A. work B. wall C. whose D. what ( )2. A. yesterday B. family C. day D. Monday ( )3. A. hear B. pear C. ear D. near ( )4. A. three B. those C. their D. these ( )5. A. food B. foot C. book D. good （）6. A. tea B. meat C. weather D. Beach （）1. A. apple B. class C. back D. dance 五、读音相同打“√”不同的打"×"。 ( )1. chair hair ( )2. room book ( )3. girl first

紫外可见分光光度法

1、什么是透光率？什么是吸光度？什么是百分吸光系数和摩尔吸光系数 2、举例说明生色团和助色团，并解释长移和短移。 4、电子跃迁有哪几种类型？跃迁所需的能量大小顺序如何？具有什么样结构的化合物产生紫外吸收光谱？紫外吸收光谱有什么特征？ 5、以有机化合物的基团说明各种类型的吸收带，并指出各吸收带在紫外—可见吸收光谱中的大概位置和各吸收带的特征。 6、紫外吸收光谱中，吸收带的位置受哪些因素影响？ 8、用紫外光谱法定量，测量最适宜的吸光度范围为0.2-0.7的依据是什么？为什么用高精度的仪器此范围可以扩大？ 11、简述用紫外分光光度法定性鉴别未知物的方法。 13、说明双波长消去法的原理和优点。怎样选择λ1λ2？ 15、为什么最好在λmax处测定化合物的含量？ 2、Lambert-Beer定律是描述与和的关系，它的数学表达式是 3、紫外-可见分光光度法定性分析的重要参数是和；定量分析的依据是 4、在不饱和脂肪烃化合物分子中，共轭双键愈多，吸收带的位置长移愈多，这是由于 6、可见--紫外分光光度计的光源，可见光区用灯，吸收池可用材料的吸收池，紫外光区光源用灯，吸收池必须用材料的吸收池 10、分光光度法的定量原理是定律，它的适用条件是和，影响因素主要有、。 11、可见-紫外分光光度计的主要部件包括、、、、和5个部分。在以暗噪音为主的检测器上，设△T=0.5%，则吸收度A的测量值在间，由于测量透光率的绝对误差小，使结果相对误差△c/c的值较小。 15、在分光光度法中，通常采用作为测定波长。此时，试样浓度的较小变化将使吸光度产生变化 1、紫外-可见分光光度法的合适检测波长范围是( ) A.400-800 nm B.200-400nm C.200～800nm D.10～200nm 2、下列说法正确的是( )o A.按比尔定律，浓度C与吸光度A之间的关系是一条通过原点的直线 B.比尔定律成立的必要条件是稀溶液，与是否单色光无关 C.E称吸光系数，是指用浓度为1%(W/V)的溶液，吸收池厚度为lcm时所测得吸光度值 D.同一物质在不同波长处吸光系数不同，不同物质在同一波长处的吸光系数相同 3、在乙醇溶液中，某分子的K带λmax计算值为385nm, λmax测定值388nm，若改用二氧六环及水为溶剂，λmax计算值估计分别为( ) (已知在二氧六环和水中的λmax校正值分别为-5和+8) A .二氧六环中390nm，水中37 7nm B.二氧六环中380nm，水中393 nm C.二氧六环中383nm，水中396nm D.二氧六环中393nm，水中380nm 6、1,3-丁二烯有强紫外吸收，随着溶剂极性的降低，其λmax将( ) A.长移 B.短移 C.不变化，但ε增强D．不能断定 8、在紫外-可见光谱分析中极性溶剂会使被测物吸收峰（）

英语语音达标测试题

英语语音达标测试题1 Part I Part II Read the words given below: 1) complicated 2) disturbance 3) democratic 4) declaratic 5) modernization Part IV Read the sentences given below: 1) Did you see him? 2) Ted has a bad cold today ? 3) Didn’t Sally tell you anything about Larry? 4) Will it take a lot of time to go to town on foot?. 5) What a beautiful sight? Part V Read the paragraphs given below： Joe Sanders has the most beautiful garden in our town.Nearly everybody enters for”The Nicest Garden Competition” each year,but Joe wins every time.Bill Frith”s garden is larger than Joe’s.

Bill works harder than Joe and grows more flowers and vegetables,but I don”t like hard work.Every year I enter for the garden competition too,and I always win a little prize for the worst garden in the town.

中职英语期末试题1

15春英语期末考试说明：本次考试只交答题卡，试卷自己保存好，考后讲评。第一部分英语知识运用（共三节共35分）第一节语音知识从下列各组ABCD四个选项中，找出其划线部分与前面单词划线部分读音相同的选项（共5分） 1. minded A .asked B. believed C. started D. worked 2. think A. earth B. then C. their D. without 3. maps A. beds B. seats C. doctors D. desks 4．ahead A really B bread C repeat D great 5．flood A. book B. good C. blood D. foot 第二节词汇与语法知识从ABCD四个选项中，找出可以填入空白处的最佳选项（共20分） 6. ---What colour is the bike? ---It’s _______ orange. A. an B. a C. / D. the 7. That isn’t her bag. It’s ________. A. my B. I C. mine D. me 8. My mother looks young her age. A. for B. to C. as D. in 9. June 1st is ____ Day all over the world. A. Child’s B. Childs’ C. Children’s D. Childrens’ 10. The family together is important during the Spring festival. A. getting B. to get C. got D. getted 11.–Are those _____? -No, they aren’t. They’re _____. A.sheep; cows B. sheep; cow C. sheeps; cow D. sheeps; cows 12. What’s the weather like today? It’s_________. A. sun B. suny c. sunny D. wind 13. .Which language is ____ , English, French or Chinese? A. difficult B. the difficult C. more difficult D. the most difficult 14.________ of the students are girls, and the rest ______ boys. A. Two third, is B. The two third, are C. Two thirds, are D. Two thirds, is 15. Tom is taller than Mike. But he is not ____ Mike. A. strong as B. so strong as C. so strong D. as strong 16. We can see a large blackboard in front of classroom A．/,the B．the,the C．/,/ D. the,/ 17. The more you practice , the ______ you draw. A. good B. better C. well D. best 18. The doctor asked the old man to give ________ smoking. A .to B. up C. off D. in 19. There ____ two bowls of rice on the table. A. is B. have C. has D. are 20. _____ can I keep the dictionary? ---A week. A. How soon B. How long C. How often D. How far 21. You’ve never been to the US, ? A. have you B. haven’t you C. do you D. don’t you 22. I’m looking forward to _____ from you . A hearing B. to hear C. to be heard D. to have heard 23． is very interesting in the river in summer A. This, swim B. That, to swim C. It, swim D. It, to swim 24. The girl ____ to bed until very late last night. A. went B. didn't go C. go D. don't go 25. Hurry up, ______ we'll be late for the meeting. A. and B. but C. then D. or 第三节完形填空阅读下面短文然后从所给ABCD四个选项中找出正确答案（10分） One day a famous speaker gave a speech to a crowd of people. He held up a $20 bill. He asked, "Who would like this $20 bill " Hands were 26 . Then he said, "I am going to give this $20 to one of you, but first let me do this." He began to crumple（弄皱）the 27 . He then asked the audience, " 28 still wants it?" Still the hands went up in the air. "What if I do this " He asked, and he 29 it on the ground, and started to step on it. He picked it up. Now the bill was 30 and crumpled. "Now who still wants it?" Still the hands went up. "My friends,” He continued, “You have all 31 a good lesson. No matter 32 I did to the money, you still wanted it because the bill did not lose its value . It was still worth $20. Many times in our lives , we are dropped, crumpled, and stepped on, because we sometimes make wrong decisions, or we may 33 with something we do not expect .When that happens, we feel depressed and think we are 34 . But in fact no

英语语言学期末考试试卷及答案

英语语言学期末考试试卷第一部分选择题 I.Directions: Read each of the following statements carefully. Decide which one of the four choices best completes the statement and put the letter A, B, C or D in the brackets. (2%X10=20%) 1. Saussure’s distinction and Chomsky’s are very similar, but they differ in that ____________. A. Saussure took a sociological view of language while Chomsky took a psychological point of view B. Saussure took a psychological view of language while Chomsky took a sociological point of view C. Saussure took a pragmatic view of language while Chomsky took a semantic point of view D. Saussure took a structural view of language while Chomsky took a pragmatic point of view 2. Language is a system of ____________ vocal symbols used for human communication. A. unnatural B. artificial C. superficial D. arbitrary 3. We are born with the ability to acquire language, _______________. A. and the details of any language system are genetically transmitted B. therefore, we needn’t learn the details of our mother tongue C. but the details of language have to be learnt. D. and the details are acquired by instinct 4. A(n)________ is a phonological unit of distinctive value. It is a collection of distinctive phonetic features. A. phone B. allophone C. phoneme D. sound 5. The morpheme –ed in the word “worked” is a(n) __________ morpheme. A. derivational B. inflectional C. free D. word-forming 6. WH-movement is __________ in English which changes a sentence from affirmative to interrogative. A. obligatory B. optional C. selectional D. arbitrary 7. Naming theory, one of the oldest notions concerning meaning, was proposed by _________. A. Grice B. Plato C. Saussure D. Ogden and Richards 8. “John married a blond heiress.”__________ “John married a blond.” A. is synonymous with B. is inconsistent with C. entails D. presupposes 9. In semantic analysis of a sentence, the basic unit is called _______, which is the abstraction of the meaning of a sentence. A. utterance B. reference C. predication D. morpheme 10. In Austin’s speech act theory, ___________ is the act of expressing the speaker’s intention; it is the act performed in saying something. A. a perlocutionary act B. a locutionary act

小学英语语音试题专项修订稿

小学英语语音试题专项文档编制序号：[KKIDT-LLE0828-LLETD298-POI08]

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高中英语语音练习题

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