.
The most convincing evidence for the importance of adult influence on a child’s intelligence comes from a study of "at risk" children. Ramey and Frances Campbell of the University of North Carolina（1）with children born into poverty-line households. The children entered the study by four months（2）age. During the study, one group spent the day in a center where teachers used games and songs to（3）the infants. Another group had no such（4）, but they were given nutritional supplements in（5）.
During preschool years the children in the early-education group showed IQ advantages often to 20 points. The highest-risk children showed the（6）gains, and at age 15 they had higher reading and math scores.
What（7）for these gains Ramey and other scientists say early childhood experiences（8）brain growth.An infant is bom（9）billions of brain cells called neurons. Some are wired to other cells before birth to regulate theof（10） life, such as heartbeat and br
A. make
B. help
C. let
D. have
| Once it was possible to define male and
female roles easily by the division of labour. Men worked outside the home and
earned the income to support their families, while women cooked the meals and
took care of the home and the children. These roles were firmly fixed for most
people, and there was not much opportunity for men or women to exchange their
roles. But by the middle of this century, men’s and women’s roles were becoming
less firmly fixed. In the 1950s, economic and social success was the goal of the typical American. But in the 1960s developed a new force called the counterculture. The people involved in this movement did not value the middle-class American goals. The counterculture presented men and women with new role choices. Taking more interest in child care, men began to share child-raising tasks with thei A. Women usually worked outside the home for wages. B. Men’s and women’s roles were easily exchanged in the past. C. Men’s roles at home was more firmly fixed than women’s. D. Men’s and women’s roles were usually quite separated in the past. [单项选择]引领创业的支柱是（）。
A. 有钱 B. 有人脉 C. 要有足够强大的创业精神 D. 有背景 [单项选择]个人外的公司和其他原题，若同时具有双重身份，应按（）确定其最终的居民身份。
A. 注册登记所在国 B. 法定代表人所在国 C. 实际管理机构所在国 D. 所得收入来源国 [单选题]无列检作业的始发列车发车前，应按规定对列车自动制动机进行（ ）试验。
A.简略 B.全部 C.贯通 [多选题]下列各句中没有语病的是（ ）。
A.世界级网球名将桑普拉斯在ATP总决赛冠军争夺战中，以3比0轻松地击败老对手阿加西，夺 得冠军，这是他第五次问鼎ATP B.艾滋病在全球呈蔓延趋势，成为人类的公害，这已是不容置疑的事实，因而防止艾滋病的行动，远 不是一个国家、一个地区的事情 C.生活节奏加快了，中年人大都工作繁忙、家务劳累，因此要加强健身运动，选择一些放松性的、有 缓解肌肉紧张及精神的锻炼项目为宜 D.近年来，我国加快了高等教育事业发展的速度和规模，高校将进一步扩大招生，并重点建设一批 高水平的大学和学科 [单选题]《铁路旅客运输服务质量规范》规定，普速旅客列车餐车炉灶墙壁、抽油烟机、排烟罩和烟道的表面可见部位()。
A.一日一清 B.一趟一清 C.一餐一清 D.一月一清 [多项选择]关于细菌的带电现象正确的是（）
A. 革兰阳性菌等电点为pH2～3 B. 革兰阴性菌等电点为pH4～5 C. 革兰阳性菌等电点为pU4～5 D. 革兰阴性菌等电点为pH2～3 E. 在中性或弱碱性环境中，细菌均带负电荷 [单项选择]公 司法 规定，股东以工业产权．非专利技术作价出资金额，不得超过公司注册资本的（ ），国务院另有规定的除外。
A. 15％ B. 20％ C. 25％ D. 35％ [单选题]在Word 的编辑状态，连续进行了两次“插入”操作，当单击一次“撤消”按钮后（ ）。
A.将两次插入的内容全部取消 B.将第一次插入的内容取消 C.将第二次插入的内容取消 D.两次插入的内容都不取消 [单选题]列车检查发现发令纸类危险品，应收缴并（）。
A.交最近前方停车站 B.交三等以上停车站 C.交列车乘警 D.采取水浸等销毁措施 [单选题]精索静脉曲张无症状者，首选采取的治疗措施
A.阴囊托带 B.手术 C.观察 D.硬化剂注射 E.热敷 [单选题] 道岔轨道静态几何不平顺容许偏差管理值,导曲线下股高于上股的限值:作业验收为0,计划维修为2 mm,临时补修为( ) mm;(应知应会-《普速铁路线路修理规则》-第6.2.2条)
A.3 B.4 C.5 D.6 [名词解释]脱湿鼓风
[判断题]高风险训练科目的安全风险评估,主要分析与评价作业环境、危险点位、装备性能、安全警戒、专业保障、薄弱环节、处置能力和气象水文、地质环境等因素,以及社情、舆情对行动安全的影响。( )
A.正确 B.错误 [多项选择]绘制双代号网络图时，工作通常可分为( )。
A. 既消耗时间又消耗资源的工作 B. 只消耗时间不消耗资源的工作 C. 只消耗资源不消耗时间的工作 D. 既不消耗时间也不消耗资源的工作 E. 具体工作和抽象工作 [单选题]段管内动车组运用所配属及动车所间转属由动车段负责，报“ ” 备案。
A.总公司 B.铁路局集团公司 C.动车段 D.动车所 [多项选择]上司因公出差的费用，经常由秘书办理或协助办理，因此，秘书要熟悉办理（ ）的方法。
A. 旅行支票 B. 借款 C. 信用卡 D. 快汇 [单项选择]
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