题目

将二进制数10010111转化成十六进制数正确的是(   ) A . 9BH B . 97H C . 79H D . 8AH 答案：B阅读下面短文，从每题所给的四个选项中选出最佳答案. 　　Betty and Harold have been married for years. But one thing still puzzles（困扰）old Harold. How is it that he can leave Betty and her friend Joan sitting on the sofa, talking, go out to a ballgame, come back three and a half hours later, and they're still sitting on the sofa? Talking? 　　What in the world, Harold wonders, do they have to talk about? 　　Betty shrugs, Talk? We're friends. 　　Researching this result called friendship, psychologist Lillian Rubin spent two years interviewing more than two hundred women and men. No matter what their age, their job, their sex, the results were completely clear: women have more friendships than men, and the difference in the content and the quality of those friendship is “marked and unmistakable.” 　　More than two-thirds of the single men Rubin interviewed would not name a best friend. Those who could were likely to name a woman. Yet three-quarters of the single women had no problem naming a best friend, and almost always it was a woman. More married men than women named their wife / husband as a best friend, most trusted person, or the one they would turn to in time of emotional distress（感情危机）“Most women,” says Rubin, “identified（认定）at least one, usually more, trusted friends to whom they could turn in a trouble moment, and they spoke openly about the importance of these relationships in their lives.” 　　“In general,” writes Rubin in her new book, “women's friendships with each other rest on shared emotions and support, but men's relationships are marked by shared activities.” For the most part, Rubin says, interactions（交往）between men are emotionally controlled--a good fit with the social requirements of “mainly behavior.” 　　“Even when a man is said to be best friend,” Rubin writes, “the two share little about their innermost feelings. Whereas a woman's closest female friend might be the first to tell her to leave a failing marriage, it wasn't unusual to hear a man say he didn't know his friend's marriage was in serious trouble until he appeared one night asking if he could sleep on a sofa.” （1）What old Harold cannot understand or explain is the fact that ________. [　　] A. he is treated as an outsider than a husband B. women have so much to share C. women show little interest in ballgames D. he finds his wife difficult to talk to （2）Rubin's study shows that for emotional support a married woman is more likely to turn to ________. [　　] A. a male friendB. a female friend C. her parentsD. her husband （3）According to the text, which type of behavior is NOT expected of a may by society? [　　] A. Ending his marriage without good reason. B. Spending too much time with his friends. C. Complaining about his marriage trouble D. Going out to ballgames too often. （4）Which of the following statements is best supported by the last paragraph? [　　] A. Men keep their innermost feelings to themselves B. Women are more serious than men about marriage. C. Men often take sudden action to end their marriage D. Women depend on others in making decisions. （5）The research done by psychologist Rubin centers around ________. [　　] A. happy and successful marriages B. friendship of men and women C. emotional problems in marriage D. interactions between men and women