In the angry debate over how much of IQ comes from the genes that children inherit from parents and how much comes from experiences, one little fact gets overlooked: no one has identified any genes (other than those that cause retardation) that affect intelligence. So researchers led by Robert Plomin of London’s Institute of Psychiatry decided to look for some:
Plomin’s colleagues drew blood from two groups of 51 children each. They are all White living in six counties around Cleveland. In one group, the average IQ is 136. In the other group, the average IQ is 103. Isolating the blood cells, the researchers then examined each child’s chromosome 6 (One of the 23 human chromosomes). Of the 37 land marks on chromosome 6that the researchers looked for, one jumped out: a form of gene called IGF2R occurred in twice as many children in high IQ group as in the average grouw-32 percent versus 16 percent. The study concludes that it is this form of the IGF2R gene,
A. 6
B. 23
C. 37
D. 46
|
Something Men Do Not Like to
Do Eric Brown hates shopping. "It’s just not enjoyable to me, " said the 28-year-old. Chicago man who was carrying several shopping bags along the city’s main street, Michigan Avenue. " When I’m out{{U}} (51) {{/U}}, I basically know what I want to get. I rush in. I buy it. I{{U}} (52) {{/U}}." Common wisdom says that guys hate to shop. You can ask generations of men. But people who study shopping say that a number of social, cultural and economic factors are now{{U}} (53) {{/U}}this "men-hate- to-shop" notion. "{{U}} (54) {{/U}}social class, ethnicity(种族划分), age-men say they hate to shop, "says Sharon Zukin, a City University of New York sociology professor. "Yet when you ask them deeper questions, it tu A. brings B. causes C. makes D. keeps [判断题]外商投资企业开采或者生产资源税应税产品，其自用的部分，暂不征收资源税。( )
[单项选择]水痘的传染期是( )。
A. 潜伏期至结痂 B. 前驱期至出疹 C. 发热至痂脱落为止 D. 出疹期至痂脱落为止 E．出疹前1～2天至皮疹全部结痂为止 [单项选择]惯性除尘器是利用流动烟气中的尘粒与烟气具有不同的（），不同的惯性力，尘粒的运动轨迹将偏离运载烟气的运动方向，从烟气中分离出来
A. 体积 B. 状态 C. 密度 D. 重量 [单选题]下列激素中能最显著促进胰岛素分泌的是( )。
A.促胰激素 B.促胃激素 C.生长素 D.抑胃肽 [判断题]当不接地系统的电力线路发生单相接地故障时,在接地点会)通过电容电流。
A.正确 B.错误 [单项选择]人民法院对于符合法律规定的民事、行政、刑事等起诉以及国家赔偿申请，应该接收诉状（）。
A. 当场登记立案 B. 在规定的期限内决定是否立案 C. 在法律规定的期限内先行立案 D. 应当依法做出裁决 [单选题]年龄组别体重或身高别体重，主要适用于( )
A.0-2岁 B.0-6岁 C.0-12岁 D.6-12岁 [判断题]依据《中国石化进入受限空间作业安全管理规定》（中国石化安【2015】675号），对带有搅拌器等转动部件的设备，应在停机后切断电源，摘除保险或挂接地线，并在开关上挂“有人工作、严禁合闸”警示牌，同时应当派专人监护。
A.正确 B.错误 [多选题]350km／h高速铁路要求有砟轨道路基一般地段工后沉降不大于50mm、桥台台尾过渡段不大于20mm。
A.正确 B.错误 C.a.30mm D.b.40mm E.c.50mm [判断题]无缝线路分为锁定应力式和放散应力式两种。（ ）
A.正确 B.错误 我来回答: 提交
|
