【正确答案】 B

【答案解析】[听力原文]
A scientific team is studying the thinking ability of eleven and half months old children. The test is a simple one. The baby watches a sort of show on a small stage. In Act One of the show, a yellow cube is lifted from a blue box, and moved across the stage. Then it is returned to the box. This is repeated 6 times. Act Two is similar except that the yellow cube is smaller. Baby boys do not react at all to the difference and the size of the cube. But girls immediately become excited. The scientists interpret the girls" excitement as meaning they are trying to understand what they have just seen. They are wondering why Act Two is odd and how it differs from Act One. In other words, the little girls are reasoning. This experiment certainly does not definitely prove that girls start to reason before boys, but it provides a clue that scientists would like to study more carefully. Already it is known that bones, muscles and nerves develop faster in baby girls. Perhaps it is early nerve development that makes some infant girls show more intelligence than infant boys. Scientists have also found that nature seems to give another boost to girls. Baby girls usually talk at an earlier age than boys do. Scientists think that there is a physical reason for this. They believe that the nerve endings in the left side of the brain develop faster in girls than in boys, and it is this side of the brain that strongly influences an individual"s ability to use language and remember things.

What is the difference between Act One and Act Two in the test?

[解析] 事实细节题。讲座一开始介绍了一个测验，这个测验由两个场景组成，首先详细介绍了第一个场景，然后指出第二个场景与第一个是类似的，只不过第二个场景使用的立方体小一些。由此可知，两个场景的区别就在于使用的立方体的大小不同。

【正确答案】 C

【答案解析】[听力原文]
How do the scientists interpret their observation from the experiment?

[解析] 事实细节题。讲座中指出，女孩在看到测验中的第二个场景时会立即兴奋起来，但是男孩却没有什么反应。科学家的解释是，女孩在尽力理解所看到的一切，或者说女孩在推理。由此可知，女孩看起来比男孩更早开始进行推理。

【正确答案】 B

【答案解析】[听力原文]
What does the lecturer say about the experiment?

[解析] 细节推断题。讲座中在介绍了本测验的成果之后，接着介绍了本测验的意义，即虽然不能明确地证明女孩比男孩可以更早地进行推理，但是这为科学家们开展进一步的研究提供了线索。由此可知，本测验可以激发科学家们开展更深入的研究。

【正确答案】 D

【答案解析】[听力原文]
According to scientists, what is another advantage given to girls by nature?

[解析] 事实细节题。讲座结尾的地方提到了科学家的另一项发现是女孩比男孩有另外一个自然优势，那就是女孩开始说话的时间比男孩开始说话的时间早。