题目

小华在“探究改变摩擦力大小的方法”时，提出了如下四个猜想。根据你对本实验的探究，发现其中与实验结论不相符合的是（ ） Ａ、使接触面变粗糙，摩擦力就变大 Ｂ、使物体间的接触面积变小，摩擦力就变大 Ｃ、使物体对接触面的压力变大，摩擦力就变大 Ｄ、把滑动变为滚动，摩擦力就变小 答案：B5、CAREER OPPORTUNITIES 1. Full―time Secretary Position Available：Applicants should have at least 2 years’ experience and be able to type 60 words a minute. No computer skills required. Apply in person at United Business Ltd，17 Browning Street，Leeds. 2. Part―time Job：We require three part―time shop assistants to work during the evening. No experience required. Applicants should be between 18 and 26 years old. Call 0115-765643 for more information. 3. Computer Trained Secretaries：Do you have experience working with computers？Would you like a full―time position working in an exciting new company？If you want to know more about US，call at 0457-896754. 4. Teaching Assistants Needed：Hania’s  Playschool needs 2 young teaching assistants to help with classes from 9 a. m. to 3 p. m. . Applicants should have references. For more in formation please visit www. Haniaplayschool. co. uk. 5. Weekend Work Available：We are looking for retired adults who would like to work part―time on weekends for Rubberlast Group Ltd. Duties include answering the telephone and giving customers information. For more information call us at 0113―6741326. 6. University Positions Open：The University of Bristol is looking for 4 teaching assistants to help with homework correction. Applicants should have a degree in one of the following：Political Science，English，Economics or History. Please call the University of Bristol for more information. 7. Home Delivery Representative：We are looking for someone who has excellent customer care，communication skills，a sales background with at 1east one year’s  experience and is a good team player with creative ideas. In return we offer a starting salary of￡20，000 and 25 days paid holiday per year. For more information，please call Direct Delivcry Team of Yorkshire Post at 0113―2388325 or 0113―2388318. 70. Which position is most suitable for a retired person？ A. Part―time shop assistant. B. Teaching assistant in Hania’s  Playschool. C. Weekend work in Rubberlast Group Ltd. D. Teaching assistant in the University of Bristo1. 71. If you have good computer skills and recently graduated from university（English degree），which jobs can you apply for？ A. Jobs 1，2 and 7.                                         B. Jobs 3，4 and 6. C. Jobs 4，6 and 7.                                         D. Jobs 2，3 and 5. 72. Which is the only position that has a formal educational requirement？ A. Full―time secretary at United Business Ltd. B. Home delivery representative for Yorkshire Post. C. Teaching assistant at Hania’s  Playschoo1. D. University positions at the University of Bristo1.