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听力原文:1 Yes, Norman, as you can see, we have well over a hundred PC computers, as well as 20 Macintosh computers set up for those who need to produce high quality graphic design work. Of course, maintenance of all these machines and the equipment that goes with them — printers, fax machines, modems, etc. — takes up almost all of my time. So, we have a number of rules. All users are expected to follow the rules. If any of them fails to follow these roles for three times running, he cannot use the equipment here for three months. Fortunately, it has been working well up till now. And hopefully I can have an assistant next year. 2 Well, you should not present yourself as being different from what you are, but you can present yourself in a very positive way. Consider what the interviewers' likely prejudices and dislikes are, and take them into account when answering questions and showing your personality. Remember to reflect on the personal qualifies that might be necessary for the work you will be doing. These qualities will surely be expected and even tested in the interview. If the company wants an aggressive go-getter, for instance, you had better not present a timid and overcautious self-image in the interview room. On the contrary, you should show a different personality. 3 Thank you for calling. We are glad to help you. Our working team is quite professional with experience in this field for over 20 years. At present, we are fully equipped with the latest recording technology and are able to meet all your recording needs, whether it's a small or a big project. Our rates are determined by your project size and level of difficulty. We are currently closed for the holiday season, but we will re-open on Monday, April 25th. ff there are any questions, please call or send a fax message. Thank you and we hope to see you after the break. 4 Before spending all your vacation money on souvenirs, be sure to keep some cash handy for the flight home. International arrival and departure taxes are on the rise, and airport service and security charges are higher than ever. There is even a rather obscure 'noise tax'. While these fees are often included in the ticket price, some countries collect them on departure — cash only. Of the more popular travel spots, Nairobi, Kenya charges the most with an international tax of $40. Riode Janeiro, Brazil charges $36, while Aruba and London charge in the low thirty dollar range. Nontego Bay, Jamaica is lower at $27. Be careful and don't get 'bitten' by these charges. 5 This is John calling for Twinlabs. We have noticed that your account has been inactive recently; your last order was made almost a year ago. We would like to express our appreciation for your patronage and encourage you to continue using your account. Right now you will be given a discount on the new Total Diet Package, which includes a month's supply of our top-of-the-line diet pills, two bottles of chromium tablets and our high-energy muscle builder. Bought separately, these items would cost over a hundred dollars, but we would like to offer them to you for the low price of sixty dollars. We are looking forward to your early order. Of course, we offer delivery service as usual. ?You will hear five different people talking about something others might be interested in. ?For each extract there are two tasks. For Task One, decide who the listener is from the list A-H. For Task Two, choose the purpose of the talk from the list A-H. ?You will hear the recording twice. TASK ONE--THE LISTENER OF THE TALK ?For questions 13-17, match the extracts with the people, listed A-H. ?For each extract, decide who the listener is. ?Write one letter (A-H) next to the number of the extract.
A.
a computer teacher
B.
a globe traveller
C.
a visitor
D.
a job applicant
E.
a group of tourists
F.
a personnel officer
G.
a client
H.
a band
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举一反三
【单选题】函数的复合运算“ ο”满足( )
A.
交换律
B.
结合律
C.
幂等律
D.
消去律
【单选题】1912年中华民国成立后,改小学堂为小学校,分初等小学校和高等小学校。初等小学校的修业年限为( )。
A.
3年
B.
4年
C.
5年
D.
6年
【单选题】1912年中华民国成立后,改小学堂为小学校,分初等小学校和高等小学校。初等小学校的修业年限为(1912年中华民国成立后,改小学堂为小学校,分初等小学校和高等小学校。初等小学校的修业年限为()。
A.
3年
B.
4年
C.
5年
D.
6年
【单选题】兰科植物的合蕊柱由 合生而成。
A.
数枚花丝
B.
数个花药
C.
雄蕊和雌蕊
D.
雄蕊与花被
【单选题】兰科植物的合蕊柱由 合生而成
A.
雄蕊和雌蕊
B.
雄蕊和花冠
C.
雌蕊合生
D.
雄蕊合生
【多选题】下列各桥中属中国四大名桥的是( )
A.
福建洛阳桥
B.
北京卢沟桥
C.
扬州五亭桥
D.
广东潮州湘子桥
E.
河北赵州桥
【判断题】凶残恐怖题材、淫秽色情题材是儿童小说禁止的。( )
A.
正确
B.
错误
【判断题】函数的复合运算满足结合律。
A.
正确
B.
错误
【单选题】下列叙述中哪一条不符合β-内酰胺类抗生素()
A.
青霉噻唑基是青霉素过敏原的主要抗原决定簇
B.
青霉素类及头孢菌素类的酰胺侧链对抗菌活性甚为重要,影响抗菌谱及作用强度
C.
在青霉素类的6α位引入甲氧基,对某些菌所产生的β-内酰胺酶有高度的稳定性
D.
青霉素遇强酸加热后发生裂解,生成青霉酸和青霉醛酸
E.
β-内酰胺酶抑制剂通过抑制β-内酰胺酶的活性而与β-内酰胺类抗生素产生协同作用,其本身不具有抗菌活性
【单选题】β-内酰胺类抗生素的构效关系与下列哪项不符
A.
β-内酰胺环是抗菌作用的必要结构,β-内酰胺环并合六元的氢化噻嗪环可显著提高抗菌活性
B.
6-氨基或7-氨基的酰化侧链影响抗菌强度,抗菌谱,耐青霉素酶及耐酸性
C.
侧链中引入吸电子基团将增强对酸的稳定性
D.
侧链中引入体积较大的基团可增强对青霉素酶的稳定性
E.
头孢菌素类的3-位取代基的改变,主要影响化合物的药物动力学特性
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