第2题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. They both graduated from art schools. B. They majored in different areas of art. C. They are equally competent for the job. D. They are both willing to draw the posters. 参考答案:C 答案解析:[听力原文]
M: I don’t know whether to ask Joe or Cora to draw the posters.
W: What difference does it
第18题: [单项选择]设森林F对应的二叉树为B,它有m个结点,B的根为p,p的右子树上的结点个数为 n,森林F中第一棵树的结点个数是 ______。 A. m-n-1 B. n+1 C. m-n D. m-n+1 参考答案:C 答案解析:[评析] 根据二叉树与森林的对应关系,将森林F转换成对应二叉树B的规则如下:
1、若森林F为空,则二叉树B为空。
2、若森林F非空,则F中的第一棵树的根为二叉树B的根;第一棵树的左子树所构成的森林
第30题: [单项选择]During the reading lesson, the teacher asked students to read a few ______from the novel. A. pieces B. essays C. fragments D. extracts 参考答案:D 答案解析:本题译文:在阅读课上,老师让学生读了几段小说中的节录。pieces“(文章的)篇”;essays“论说文,散文”;fragments“碎片,断片”;extracts“选段,节录”,符合句意。
第31题: [单项选择]根据临床表现,应诊断为: A. 聚星障 B. 混睛障 C. 湿翳 D. 凝脂翳 E. 花翳白陷 参考答案:D