第27题: [单项选择]对肾移植的相容性影响最大的是()。 A. HLA-A B. HLA-B C. HLA-C D. HLA-DR E. HLA-DP 参考答案:D
第28题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard.A) One dollar. C) One dollar and 5 cents. B) 75 cents. D) 80 cents. 参考答案:D 答案解析:[听力原文] M: Do I have enough postage on this package W: Let’s see. You already have one 15-cent