第11题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. English. B. French. C. Chinese. D. Japanese. 参考答案:A 答案解析:[听力原文]
W: Mr. Smith is fluent in English and now he’s beginning to study French.
M: He also knows
第21题: [多项选择]下列关于溶液的等渗与等张的叙述中,哪些是正确的 A. 等渗溶液是指渗透压与血浆相等溶液,是物理化学概念 B. 等张溶液是指与红细胞膜张力相等的溶液,是生物学概念 C. 等渗不一定等张,但多数药物等渗时也等张 D. 等渗不等张的药液调节至等张时,该溶液一定是低渗的 E. 0.9%氯化钠溶液为等渗溶液,但并不是等张溶液 参考答案:A,B,C