第3题: [单项选择]引起原发性肝癌最常见的病因是( )。 A. 乙型、丙型肝炎病毒感染 B. 食物中致癌物质 C. 亚硝胺类化学物质 D. 寄生虫感染 E. 细菌感染 参考答案:A 答案解析:[解析] 原发性肝癌的病因病理
第4题: [单项选择]设执行以下程序段时依次输入1、3、5,执行结果为______ 。 Dim a(4)As Integer Dim b(4) As Integer For K=0 To 2 a(K+1)=Val(1nputBox(“请输入数据:”)) b(3-K)=a(K+1) Next K Print b(K) A. 1 B. 3 C. 5 D. 0 参考答案:A
第9题: [单项选择]先天性囊肿() A. 因胰腺炎症或创伤所引发的局部组织坏死、液化所致的纤维性包裹 B. 多发性,单房或多房,薄层纤维囊壁内面衬覆单层非黏液性扁平或矮立方状上皮 C. 因阻塞造成的胰腺导管高度扩张 D. 囊壁内可见虫卵结节 E. 囊内含黏液,囊内壁衬覆单层高柱状黏液上皮,可见乳头形成 参考答案:B
第16题: [单项选择]The outer of athletic events at the ancient Olympics ______. A. was considered unimportant B. has not definitely been established C. varied according to the number of foreign competitors D. was decided by Zeus, in whose honor the Games were held 参考答案:B 答案解析:[解析] 第二段最后一句提到The exact sequence of events is uncertain(比赛的确切顺序并不确定)。B项表述与题意相符。