问题
多项选择题
关于心音听诊的叙述，下列哪些是正确的（）。
A.心音有4个
B.通常只能听到S1和S2
C.某些健康儿童和青少年可听到S3
D.S4一般听不到
E.S2在心尖部听诊最清楚
答案
参考答案：A, B, C, D
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关于心音听诊的叙述，下列哪些是正确的（）。
A.心音有4个
B.通常只能听到S1和S2
C.某些健康儿童和青少年可听到S3
D.S4一般听不到
E.S2在心尖部听诊最清楚
参考答案：A, B, C, D
第二卷(两部分，共35分) 第四部分任务型阅读（共10小题；每小题1分，满分10分） 请认真阅读下面短文，并根据所读内容在文章后表格中的空格里填入最适当的单词。 注意：每空一词。 Boys do worse in English when there are girls in their class, a research student said. This finding disagrees with the widely held belief that girls always have a good influence on boys in school. Boys do best with as few girls as possible in English lessons at primary and secondary schools, Steven Proud, a research student at Bristol University, told the Royal Economic Society’s conference. But when it comes to math and science, both boys and girls at primary schools achieve up to a tenth of a grade higher when there is a greater percentage of girls in the class, Proud found. Proud kept a record of boys’ and girls’ test results at the ages of 7, 11, and 16 in 16,000 schools in England. He studied the test scores to see whether the percentage of girls made a difference to the results of both boys and girls in math, science and English. Boys always perform worse when the number of girls they study English with increases, which is especially the case at primary schools. Proud also found that girls are unaffected by the number of boys in their English class. Proud said boys may do worse in English when there is high proportion of girls in their class because they think that the girls are better than them. It could also be that teachers use teaching styles more appropriate to girls when there more girls than boys in the class. Proud argues that his results show boys should be taught English in single—sex classes. However, Professor Alan Smithers, director of the Centre for Education and Employment Research at the University of Buckingham, said, “Boys may be discouraged by how well girls are doing in English, but you can’t say that it means boys and girls should be separated. It has very little practical importance to schools.”
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