第12题: [单项选择]上颌第一磨牙牙冠拾面的牙尖从大到小的顺序是 A. 近中舌尖＞近中颊尖＞远中颊尖＞远中舌尖 B. 近中舌尖＞近中颊尖＞远中舌尖＞远中颊尖 C. 近中颊尖＞近中舌尖＞远中舌尖＞远中颊尖 D. 近中颊尖＞近中舌尖＞远中颊尖＞远中舌尖 E. 远中颊尖＞近中舌尖＞远中舌尖＞近中颊尖 参考答案:A
第17题: [单项选择]What will they ask Lucy to do A. To turn on the radio. B. To turn off the radio. C. To turn down the radio. 参考答案:C 答案解析:[听力原文] F: Don’t you think the radio is too noisy M: Yes, ask Lucy to turn it down.
第31题: [单项选择]People who are to be unhappy________. A. always act differently from others B. usually have a fault-finding habit C. can discover the unpleasant part of certain things D. usually are influenced by the results of certain things 参考答案:B 答案解析:[解析]事实细节题。文章第二段说they are continually discontented．By their remarks，they sour the pleasures of societ
