| Every year more than half a million
American kids have drainage (排泄) tubes surgically implanted in their ears to
combat persistent infections. The procedure, known as tympanostomy, may not be
as{{U}} (62) {{/U}}as the tonsillectomy was in the 1940s, but it now{{U}}
(63) {{/U}}as the nation’s leading childhood{{U}} (64)
{{/U}}and a new study suggests it’s being vastly overused. In{{U}} (65)
{{/U}}more than 6,000 scheduled ear tube operations, a team of experts{{U}}
(66) {{/U}}by Harvard pediatrician Lawrence Kleinman found that fewer
than half were clearly justified. "Each year", the researchers write in the
current Journal of the American Medical Association (JAMA), "several hundred
thousand children in the United States may be{{U}} (67)
{{/U}}tympanostomy tubes that offer them no demonstrated{{U}} (68)
{{/U}}...and may place them a A. feeling B. hearing C. health D. memory [名词解释]大地体
[单选题]邻近营业线的( )均应设置驻站（台）联络员、现场防护员，并在车站（台）《行车设备施工登记簿》（运统-46）内进行登销记。
A.A类施工 B.B类施工 C.C类施工 D.各类施工 [单项选择]儿童在玩沙、玩泥时，会想出不同的玩法，并且玩得津津有味，这是（）特点的体现。
A. 游戏是自发的、自愿的 B. 游戏是自由自在的 C. 游戏是愉快的 D. 游戏是充满幻想和创造的 [判断题]【HH】 在汽轮机轴封处 , 由于蒸汽流速高 ,蒸汽放热系数大 ,启动时这些部分会 产生较大的温差 。（ ）
A.正确 B.错误 [简答题]part 2 & 3Describe a successful person
Why do you think he/she is successful
How to succeed in your life Please draw on your personal experience
Do you send books to others as gifts
What kind did you read when you were a child
Is it possible to continue part-time study while working
[单选题]施工现场专用电力变压器或发电机中性点直接接地的工作接地电阻值,一般情况下取为( )。
A.≥4Ω B.≤4Ω C.10Ω D.≤10Ω [单选题](44920)在电气化铁路线路上作业的起道或拨道量超出有关规定时,必须先通知( )予以配合。(1.0
分) A.工务工区 B.电务工区 C.接触网工区 D.车站 [多选题]旅客列车的车种分为：（） 。
A.动车组旅客列车 B.特快旅客 列车 C.快速旅客 列车 D.普通旅客列车 [单项选择]报关员记分已达______分，拒不参加考核的，直属海关可以将报关员的姓名及所在单位等情况对外公告。
A. 30 B. 20 C. 10 D. 5 [名词解释]二重证据法
[单选题]NGS指示器蓝色灯亮代表
A.系统正常 B.系统失效 C.系统性能下降 D.飞机不能放行 [单项选择]保持心理平衡的做法错误的是（）
A. 助人为乐、知足常乐、自得其乐 B. 正确对待自己、他人、社会 C. 既要奉献社会又要品味人生 D. 为了事业可以放弃家庭 我来回答: 提交
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