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Have you ever wondered what a Degree might be worth to you in your job or career(事业)? It means a lot of Americans with an Associate Degree average nearly $10,000 more in yearly earnings than those with just a High School Diploma(毕业证). Harcourt Learning Direct offers you a way to get a Specialized Associate Degree in 11 of today’s growing fields-without having to go to college full time. With Harcourt, you study at home, in your spare time-so you don’t have to give up your present job while you train for a better one. Choose from exciting majors like Business Management, Accounting, Dressmaking &Design, Bookkeeping, Photography, Computer Science, Engineering, and more! Your training includes everything you need! Books, lessons, learning aids-even professional-quality tools and equipment-everything you need to master your training and more ahead to a new career is included in the low tuition(学费) price you pay. Your education is nationally recognized! Nearly 2, 000 American companies-including General Electric, IBM, Mobile, General Motors, Ford, and many others-have used our training for their employees. If companies like these recognize the value of our training, you can be sure that employees in your area will, too! Earn your degree in as little as two years! Get a career diploma in just six months! The career of your dreams is closer than you think! Even if you have no experience before, you can get valuable job skills in today’s hottest fields! Step-by-step lessons make learning easy. Prepare for promotions(提升), pay raises, even start a business of your own! Send today for FREE information about Harcourt at home training! Simply fill in your name and address on the coupon(票券) above. Then write in the name and number of the one program you’re most interested in, and mail it today. We’ll rush your free information about how you can take advantage of the opportunities(机会) in the field you’ve chosen. Act today! Mail coupon today! Or call the number below 1-800-372-1589. Call any time, 24 hours a day, 7 days a week. www. Harcourt-learning. com E-mail:Harcourt@learning. com. 小题1:This advertisement aims at calling on people to ________. A.attend full-time universities B.work part time to further their education C.improve their education at home to get better jobs D.earn their degrees in different ways that suit them 小题2:Which of the following is NOT clearly mentioned in this advertisement? A.The way how you will get your degree. B.Tuition price. C.The hot fields you will be preparing yourself for. D.The length of time it will take you to get a degree. 小题3:What does the writer of this ad intend to say by naming General Electric, IBM, Ford, etc.? A.To show that their training is widely used in the country. B.To show that the training program is fully supported by famous companies in the U. S. C.To prove the value of their training in every area. D.To show the importance of getting recognized by the most famous companies. 小题4:It seems to the writer that the greatest attraction for people to take their training is______. A.its convenience B.the degree’s nation-wide recognition C.the economic benefit(利益) it will bring about D.the hot fields the training will help people to enter 小题5:How many ways are mentioned in the ad for people to get in touch with the Harcourt Learning Direct? A.One. B.Two. C.Three. D.Four.
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【简答题】某无色溶液由石灰水、盐酸、氢氧化钠溶液、氯化钠溶液、碳酸钠溶液中的两种组成。 已知:氯化钙溶液为中性,碳酸钠溶液为碱性,Na 2 CO 3 + CaCl 2 = CaCO 3 ↓ + 2NaCl。 (1)若取适量样品放入试管中,滴加无色酚酞溶液,溶液为无色。溶液的组成是________。 (2)若取适量样品放入试管中,滴加无色酚酞溶液,溶液变成红色,再向试管中加入过量的氢氧化钙溶液,观察到有沉淀产...
【判断题】选区激光烧结成型技术起源于英国
A.
正确
B.
错误
【简答题】常温下某盐酸溶液的pH=2.0,则此溶液中的OH-浓度为__________mol/L;若将此溶液用水稀释至原来浓度的1/10,则稀释后溶液中0H-浓度为__________mol/L。
【单选题】某一元弱酸HA的溶液中,若未电离的HA分子个数与溶液中的离子个数(忽略水电离)比为a:b,则HA的电离度(即转化率)是
A.
×100%
B.
×100%
C.
×100%
D.
×100%
【判断题】玻璃仪器尽可能倒置,高、大的玻璃仪器放在实验柜里面。
A.
正确
B.
错误
【判断题】玻璃仪器尽可能倒置,高、大的仪器放在实验柜里面。
A.
正确
B.
错误
【单选题】某温度下一定量的硝酸钾溶液,若将该溶液恒温蒸发掉 20 g 水,溶液恰好达到饱和状态;若在原溶液中加入 6g 硝酸钾,充分搅拌后,仍有 2 g 不溶解。该温度下硝酸钾的溶解度为
A.
20 g/100 g 水
B.
15 g/100 g 水
C.
10 g/100 g 水
D.
5 g/100 g 水
【单选题】常温下,下列有关溶液的说法不正确的是
A.
某物质的水溶液中由水电离出的c(H + )=1×10 -a mol/L,若a>7,则该溶液的pH为a或14-a
B.
将0.2 mol/L的某一元弱酸HA溶液和0.1mol/L NaOH溶液等体积混合后溶液中存在:2c(OH - )+ c(A - )=2c(H + )+c(HA)
C.
pH=3的二元弱酸H 2 R溶液与 pH=11的NaOH溶液混合后,混合液的pH等于7,则混合液中c(R 2- ) > c(Na + ) > c(HR - )
D.
相同温度下,0.2mol/L的醋酸溶液与0.1mol/L的醋酸溶液中c(H + )之比小于2:1
【单选题】对于某酸的酸式盐NaHY的水溶液的下列叙述中,正确的是(  )
A.
该酸式盐的水溶液一定显酸性
B.
在该盐溶液中,离子浓度为c(Na + )>c(Y 2 - )>c(HY - )>c(OH - )>c(H + )
C.
若HY - 能水解,水解方程式为HY - +H 2 O Y 2 - +H 3 O +
D.
若HY - 能电离,电离方程式为HY - +H 2 O Y 2 - +H 3 O +
【简答题】某一弱酸HA的标准解离常数 在水溶液中的解离度为α。若加等体积水稀释此洛液,则发生的变化是( )。
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