第1题: [单项选择]—Can he get the first prize for running —Impossible now: He ______ to de so, but he has just hurt his leg.
A. was expected B. would expect C. has expected D. is expected 参考答案:A 答案解析:[考点] 时态和被动语态 [解析] 应选被动语态,本题考查动词谓语用法,注意区分各种主要时态之间的不同使用条件,以及主动语态和被动语态之间的不同使用条件。
第8题: [单项选择]已知一棵二叉树前序遍历和中序遍历分别为ABDEGCFH和DBGEACHF,则该二叉树的后序遍历为( )。 A. GEDHFBCA B. DGEBHFCA C. ABCDEFGH D. ACBFEDHG 参考答案:B 答案解析:[解析] 二叉树的遍历有3种:前序、中序和后序。后序遍历首先遍历左子树或左子结点,然后遍历右子树或右子结点,最后访问根结点;中序遍历首先遍历左子树或左子结点,然后访问根结点,最后遍历右子树或右子结点;
第23题: [单项选择]According to the passage, the relationship between employer and illegal worker is best described as ______. A. admirable B. amicable C. difficult D. impersonal 参考答案:D 答案解析:admirable值得赞美的,极好的;amicable友善的,和平的;difficult难相处的;impersonal非个人的。最后一段中说"Most workers do not even know