题目

阅读理解 Kevin Adkins admits that when he lacks confidence, he usesbig words to appear smarter, of which most people don't know the meaning. Onlywhen I need to impress the person. I prefer using big words, says the45-year-old. Adkins is not alone. Many people use longer words in placeof shorter ones because they know, consciously or unconsciously, that whenothers form impressions of them after a glance or a short conversation, theyoften work harder to give the right impression. People think,if I can show that I have a good vocabulary, I'll sound smarter says DanielOppenheimer, PhD, a profe23、运算结果为a6b12的一个算式是（a3b6）2=a6b12（答案不唯一）．