第14题: [单项选择]-2,0, 5, 16, 33, ( )。 A. 59 B. 52 C. 53 D. 56 参考答案:D 答案解析:[解析] 两两做差后可得到的数列2,5,11,17,均为质数,且它们在整组质数数列中是间隔出现的,因此下一个质数应为23,空缺项为33+23=56,故本题答案为D。
第31题: [单项选择]How does the man usually come to school A. By bus. B. On foot. C. By bike. 参考答案:C 答案解析:[听力原文] F: How do you usually come to school, by bus M: No, I usually come to school by bike.