第13题: [单项选择]肥达试验所用抗原不包括( ) A. 伤寒沙门菌O抗原 B. 甲型副伤寒沙门菌O抗原 C. 伤寒沙门菌H抗原 D. 甲型副伤寒沙门菌H抗原 E. 乙型副伤寒沙门菌H抗原 参考答案:B
第14题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. To his home. B. To her home. C. To go to the picnic. D. To go shopping. 参考答案:A 答案解析:[听力原文] W: Well, the examination is over now, and we can go to the picnic. M: Going to the picn