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【单选题】
Individuals of a particular species of ground beetle are either light tan or dark brown. Light-tan beetles are predominant in habitats with light-colored sandy soils, and dark-brown beetles are predominant in habitats with dark-colored loam soils. In an experiment designed to determine the survival rates of light-tan beetles and dark-brown beetles in different habitats, 500 light-tan beetles and 500 dark-brown beetles were released in each of four habitats. Each beetle had been marked with a small spot of red paint on the underside of its abdomen before it was released. One week after the beetles had been released, any marked beetles that could be found were recaptured. The results are presented in the table below. It is assumed that differences in the numbers of beetles recaptured are directly related to differences in survival rates. Which of the following can be inferred from the data in the table?A.
The reproductive success of beetles in habitats with sandy soils is greater than that of beetles in habitats with loam soils.
B.
Insectivorous birds prefer to eat light-tan beetles rather than dark-brown beetles.
C.
Ground beetles have higher rates of survival in habitats with loam soil.
D.
Insectivorous birds are predators of this species of ground beetle.
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【单选题】心理学上将儿童认识性别的过程称为性别认同，以下描述错误的是( )。
A.
儿童的性别认同是在生物学基础上儿童与成人相互作用的结果.
B.
儿童的性别认同与成人的教育态度和养育方法不存在直接相关原因。
C.
如果从一出生父母就以与特定性别相适应的方式对待儿童，则3—4岁的儿童即可正确识别自己和别人的性别
D.
性别认同障碍的儿童常在确认自己的性别时与自身生物的性不相吻合
E.
倒错的性心理导致他们习惯于自身生物性相异的思想模式，易导致成年以后及其他相应的性变态行为
【简答题】（14分）按要求完成下列问题 (1)画出丙烯的键线式 。 (2)写出乙醇和浓硫酸170℃发生脱水反应的化学方程式 ； 该反应类型是 反应 (3) 有机物A：在 较高温度下和Br 2 按物质的量之比1：1发生加成反应的方程 。 (4)某高分子有机物 是由一种单体缩聚而成的，该单体的结构简式为 。 (5) 的一氯取代物有 种， 的二氯取代物有 种。
【单选题】把氧化还原反应【图片】 组成原电池，欲使该原电池的电动势增大，可采取的措施是：
A.
降低Zn 2+ 浓度
B.
降低 Ag+ 浓度
C.
增加 Zn2+ 浓度
D.
加大 Ag 电极的表面积
【多选题】通过对低市盈率股票的观察可发现( )。
A.
这类股票的价值常常被高估
B.
这类股票的市场价格更接近于价值
C.
这类股票往往是投资者关注较少的股票
D.
这类股票往往不是短期内的热点
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