单选题

{{B}} Text{{/B}}
After 20 years of marriage, a husband may still not understand his wife. How is it that she is never at a {{U}}(26) {{/U}} for words? How can she {{U}}(27) {{/U}} the names of a couple they met on {{U}}(28) {{/U}} years ago? Now we know {{U}}(29) {{/U}} to tell him: It's her brain.
Although there are obviously cultural {{U}}(30) {{/U}} for the differences in emotions and behavior, {{U}}(31) {{/U}} breakthrough research reveals that the {{U}}(32) {{/U}} of many puzzling differences between men and women may {{U}}(33) {{/U}} in the head. Men's and women's brains {{U}}(34) {{/U}} much in common, but they are definitely not the same {{U}}(35) {{/U}} size, structure or insight. Broadly speaking, a woman's brain, like her body, is ten to fifteen percent smaller than a man's, {{U}}(36) {{/U}} the regions dedicated to the language may be more densely {{U}}(37) {{/U}} with brain cells.
Girls generally speak earlier and read faster. The reason may be {{U}}(38) {{/U}} females use both sides of the brain when they read. In {{U}}(39) {{/U}}, males rely only on the left side.
At every age, women's memories {{U}}(40) {{/U}} men's. They have a greater ability to {{U}}(41) {{/U}} names with faces than men do, and they are {{U}}(42) {{/U}} at recalling list. The events people remember best are those that an emotion is attached to. {{U}}(43) {{/U}} women use more of their right brains, which {{U}}(44) {{/U}} emotions, they may do this automatically.
While we don't yet know what all these findings imply, one thing is {{U}}(45) {{/U}} : Male and female brains do the same things, but they do them differently.

【正确答案】 C

【答案解析】[精解] 本题主要考查引导词的用法。从后面的“It's her brain”可知，空格处应填的词引导的是名词性短语，what可以引导名词性短语或从句，所以答案C符合要求。when引导时间状语从句；how引导方式状语从句；where引导地点状语或定语从句。

【正确答案】 A

【答案解析】[精解] 本题考查连词的用法。hence表示“因此，从此”，因为是副词，不能引导句子，故排除；yet作连词时意为“然而，可是”；then为副词，意为“当时，在那时，然后”；thus为连词，有“因此，于是”的意思，表结果。从上文来看，这里是由上文得出的结论，故选A。