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问题 选择题

Lots of people are wondering___________________________.

A．that China will win the first place in the next Olympic Games

B．what is wrong with the missing plane

C．why is the South Korean drama Man From the Stars so popular in China

D．where can we move if there is too much pollution on Earth

答案

答案：B

题目分析：句意：　很多人想知道失联的飞机有什么毛病？不管什么类型的定语从句，总是用陈述语序，即：从句的连接词后是主语、谓语、宾语的语序，从句的时态要与主句的时态保持一致。结合句意，故选Ｂ。

单项选择题

关于在自然条件下，某随机交配种群中等位基因A、a频率的叙述，错误的是（）。

A．在某种条件下两种基因的频率可以相等

B．该种群基因频率的变化只与环境的选择作用有关

C．一般来说，频率高的基因所控制的性状更适应环境

D．持续选择条件下，一种基因的频率可以降为零
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问答题

The relative decline of American education at the elementary-and high-school levels has long been a national embarrassment as well as a threat to the nation’s future. Once upon a time, American students tested better than any other students in the world. Now, ranked against European schoolchildren, America does about as well as Poland, behind at least 10 other nations. Within the United States, the achievement gap between white students and poor and minority students stubbornly persists.
For much of the last half century professional educators believed that if they could only find the right pedagogy, the right method of instruction, all would be well. Yet in recent years researchers have discovered something that may seem obvious, but for many reasons was overlooked or denied. What really makes a difference, what matters more than the class size or the textbook, the teaching method or the technology, is the quality of the teacher. Much of the ability to teach is innate-an ability to inspire young minds as well as control unruly classrooms that some people instinctively possess and some people definitely do not.
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