问题
选择题
向量
|
答案
∵u=（1+2x，4），v=（2-x，3），
∵u∥v，
∴（1+2x）×3-（2-x）×4=0，
∴x=
．1 2
故选D
搜题请搜索小程序“爱下问搜题”
向量
|
∵u=（1+2x，4），v=（2-x，3），
∵u∥v，
∴（1+2x）×3-（2-x）×4=0，
∴x=
．1 2
故选D
| 完形填空。 | ||||
| The purpose of a letter of application (求职信) is to help you to "sell" yourself. It should state 1 the job you want, and should tell what your abilities are and what you have 2 . It should be simple, human, personal and brief without 3 out any necessary facts. In writing a letter of application, keep in 4 that the things a possible employer is most 5 to want to know about are your qualifications(条件), your achievements and your aims. The opening paragraph is perhaps the most important part. 6 the first few sentences fail to 7 the reader's attention, the rest of the letter may not be 8 at all. Try to key your opening remarks to the needs or interests of the employer not 9 your own need or desires. For example, instead of beginning with "I saw your 10 in today's newspaper," you might say "I have made a careful 11 of your advertising during the past six months" or "I have made a survey in my neighborhood to find out how many housewives 12 your product and why they like it." Try to 13 generalities. Be clear about the kind of job for which you are now 14 . College graduates looking for their first positions often ask "What can I 15 in a letter? Employers want experience-which, naturally, no 16 has." The answer is that everything you have ever done is 17 . It is important to write a good strong closing for your letter. 18 a specific request for an interview or give the possible employer something definite to do or expect. An excellent 19 is to enclose(内附) a stamped, self-addressed envelope with your letter. That makes it 20 for a possible employer to get in touch with you. | ||||
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