Questions 16 to 18 are based on the following passage.
Suppose you work in a big firm and findEnglish important for your job because you often deal with foreign businessmen. Now you are looking for a place where you can improve yourEnglish, especially your spokenEnglish. Here are some ads aboutEnglish language training. You may find the information you neeD、 GlobalEnglishCenter *GeneralEnglish in all four skills: listening, speaking, reading and writing. *3-month(700 yuan), 6-month(1, 200 yuan) and 12-month(2, 000 yuan) courses. *Choice of morning or evening classes, 3 hours per day, Mon. —Fri. *Experienced collegeEnglish teachers. *Close to the city center and bus stops. TEL: 676012134 Modern Language School *Special courses inEnglish for business. *Small classes (12—16 students) on Sat. & Sun. from 2:00 p.m. to 5:00 p.m. *NativeEnglish teachers fromCanada and USA、 *Language lab and computers supplieD、 *3-month(1, 050 yuan ), 6-month(1, 850 yuan ) TEL: 67351234 The 21st centuryEnglish TrainingCenter *We specialize in elective teaching at all levels. *We offer morning or afternoon classes, both of which last three months and a half at a cost of 800 yuan.Entrance exams: June 1 andDec 1. *Only 15-minute walk from the city center. Call 67801234 for more information. The International House ofEnglish *3/6-monthEnglish courses for students of all levels at very low cost：60 yuan for 12 hours per week ;convenient class hours 9—2A、m. and 2—p.m. *A、4-month evening course for developing speaking skills (same cost as day classes). *Well-trainedChinese andAmerican teachers. *Free sightseeing and social activities. *very close to theCentral park. For further information call 67431234. The 21stCenturyEnglish TrainingCenter is different from the other 3 schools in that______. A、it requires an entrance examinationB、it is nearest to the city center C、its courses are more advancedD、its teaching quality is better
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