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听力原文：By far the most serious economic problem in Britain is that of inflation, now being accelerated by overheated investment in capital and property and threatened further by a possible wage explosion.
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If you were swayed by someone's looks, would that be wrong？ In the past, people often equated beauty with virtue and ugliness with vice.
Even now, the expression "as ugly as sin" has not quite passed from the language. There is, of course, the equally famous expression "beauty is in the eye of the beholder", to counter it. Most beholders agree what is beautiful — and modern biology suggests there is a good reason for that agreement. Biology also suggests that beauty may, indeed, be a good rule of thumb for assessing someone of either sex. Not an infallible one, and certainly no substitute for an in-depth investigation. But, nevertheless, an instinctive one, and one that is bound to contribute to the advantage of the physically well endowed.

尺寸界线用粗实线绘制，并由图形的轮廓线、轴线或对称中心线处引出。()

在“学生-选课-课程”数据库中的3个关系如下：
S(S，SNAME，SEX，AGE)
SC(S，C，GRADE)
C(C，CNAME，TEACHER)
现要查找选修“数据库技术”这门课程的学生的学生姓名和成绩，可使用如下的 SQL 语句：SELECT
SNAME，GRADE FROMS,SC,C WHERE CNAME='数据库技术'ANDS.S=S@C.@S AND 【13】

尺寸界线一般应与尺寸线垂直，必要时，才允许倾斜。()