题目

—I have a toothache.—You should _______.A. drink lots of water B. take a restC. see a dentist D. have a good sleep 答案：【答案】C【解析】试题A.drink lots of water喝大量的水；B.take a rest休息一下；C.see a dentist看牙医；have a good sleep好好休息；句意：---我牙痛---你应该去看牙医。故选C（2011?天门）如果 3a=4b，那么a：b=44：33，a和b成正正比例关系．