| Many people wrongly believe that when
people reach old age, their families place them in nursing homes. They are left
in the{{U}} (67) {{/U}}of strangers for the rest of their lives. Their
{{U}} (68) {{/U}} children visit, them only occasionally, but more often,
they do not have any {{U}} (69) {{/U}} visitors. The truth is that this
idea is an unfortunate myth--an {{U}} (70) {{/U}} story. In fact, family
members provide over 80 percent of the care {{U}} (71) {{/U}} elderly
people need. Samuel Preston, a sociologist, studied {{U}} (72) {{/U}} the
American family is changing. He reported that by the time the {{U}}
(73) {{/U}} American couple reaches 40 years of age, they have
more parents than children. {{U}} (74) {{/U}} , because people today live
longer after an illness than people did years {{U}} (75) {{/U}} , family
members must p A. hands B. bodies C. arms D. homes [单选题]钢轨头部垂直磨耗在钢轨顶面宽（ ）处（距标准工作边）测量。
A.1 B.1/2 C.1/3 D.1/4 [单项选择]腐层的等级是根据防腐层的厚度和（）划分的。
A. 结构 B. 成分 C. 绝缘电阻 D. 质量 [判断题]当母线无电时，电容器组未跳开，应将电容器组手动断开。（）
A.正确 B.错误 [单项选择]人每天都会眨眼无数次，有时是有意识的动作，有时则是“自动”进行的。这些“自动”进行的眨眼动作的主要目的是：
A. 阻挡灰尘等异物进入眼睛 B. 防止眼部肌肉僵直、疲劳 C. 习惯性动作，没有什么目的 D. 使眼泪均匀覆盖眼球，保持眼球湿润 [简答题]中国古代建筑外形的主要特点体现在哪里？
[判断题] 已知实际电压源E=10V,r0=2Ω,可以将它等效为电流源IS=5A rs=r0=2Ω。
A.正确 B.错误 [单项选择]清朝前期实行的“摊丁入亩”赋役改革有利于：（）
A. 人口自由流动 B. 土地兼并 C. 稳固自然经济 D. 减轻地租 [单选题]钢轨探伤仪前37°探头,遇到第Ⅰ、Ⅳ象限间的螺孔中心水平裂纹时( )。
A.先显示裂纹波再显示螺孔波 B.先显示螺孔波再显示裂纹波 C.螺孔波和裂纹波同时显示 D.不显示螺孔波只显示裂纹波 [多项选择]中药的一般采收原则是
A. 根及根茎类在春、秋季 B. 叶类在开花前或果实未成熟前 C. 皮类在冬季 D. 全草类在茎叶茂盛时 E. 果实种子类在夏、秋季 我来回答: 提交
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