【名词&注释】
成年人(adult)、过去分词(past participle)、抽样误差(sampling error)、孩子们、随机样本(random sample)、罂粟科(papaveraceae)、连接词。
[单选题]Sx表示的是（ ）。
A. 总体中各样本均数分布的离散情况
B. 样本内实测值与总体均数之差
C. 样本均数与样本均数之差
D. 表示某随机样本的抽样误差
E. 样本的均数
查看答案&解析
举一反三：
[单选题]When your colleague brings about a problem, you should _______ .
A. find a better way to handle the problem
B. blame him for his lack of responsibility
C. tell him to find the cause of the problem
D. ask a more able colleague for help
[单选题]关于主动转运的叙述错误的是（ ）。
A. 吸收部位药物浓度很低时药物吸收符合一级速度过程
B. 吸收部位药物浓度很高时药物吸收符合零级速度过程
C. 竞争抑制的原因是载体的数量有限
D. 特定部位才能转运药物是由于载体具有部位专属性
E. 只要药物浓度增加，吸收速度就会相应增加
[单选题]
B．Because
C．Until
D．So
A. AsB．Because
B. Until
C. So
[单选题]具有漏斗形花冠的分类群是( )。
A. 罂粟科(papaveraceae)
B. 旋花科
C. 桔梗科
D. 兰科
[单选题]The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult.
A. once
B. when
C. if
D. unless
[单选题]What is the main idea of the passage?
A. Multitasking has become a way of life.
B. Multitasking often leads to efficiency decline.
C. Multitasking exercises need to be improved.
D. Multitasking enables people to remember things better.
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