- 1.WHEREcj（）80AND89；WHEREcj>=80ANDcj<=89；两种描述方式效果一样。2.not，and，or的优先级是and，not，or3.AND指令的作用是（）4.Over the past 17 years, space scientists and engineers who have participated in China’s lunar exploration program have promoted 5.Dogs are human friends and ownership of dogs can help people lessen blood pressure and（）.6.Jack asked me how he looked after his operation, so I told a white lie and said（）.A. he looked greatB. he looked terribleC. I’d 7.Hestia and Hera are （）.8.The Joy Luck Club earned a great deal of praise for Amy Tan and has since been turned into an audiotape, a play, and a successfu9.The prefixes “in-”, “im-”, “ir-” and “il-” are totally identical and they are interchangeable。10.The affix “en” can serve as both a prefix to forms verbs such as “encourage” and “enlarge”, and as a suffix to form verbs or adj11.The prefix “over-” is identical with “sub-” and “under-” in terms of meaning and usage。12.The basic elements of a company presentation contain greeting and self-introduction, subject, main body and Q &A session13.A company can advertise in a variety of ways, depending on how much it wishes to spend and the size and type of audience it wish14.The ancient Silk Road and ”Amber Road“ these two roads joined in what is now（）and help exchanges between Western and Eastern civ15.Effective leaders distill complex thoughts and strategies into simple, memorable terms __________ colleagues and customers can g16.A good CEO should find the root of the problem and figure out how to fix it with his executive board and even the whole company.17.— Id like to take a look first at those structural support beams that were going to be put in place on the second floor.—_______18.If youare smart enough, and have got ambition and keep pushing forward, you can riseto the top of your chosen profession.19.In a world so torn apart by rivalry, anger, and hatred, we have the ____vocation to be living signs of a love that can bridge al20.The communication is within business and administration, aiming at a common objective and profits for both the individuals and o