大学英语： A.When students in a college class

　　1. A.When students in a college class were asked what should be done when they came across a new word in their reading，84 percent said，“Look it up in the dictionary.”

　　B. Suppose someone asks you what the word “fast” means.

　　2. Make one's efforts most productive 宾补; 使你的努力变得有成效。

　　3. Reading travel books apparently comes “before” other kinds of reading. 动名词做主语

　　4. 语法：Only when you go through the mental exercises to come up with a tentative definition should you open the dictionary to see if you're right. 倒装句型

　　Only+状语+助动词+主语+动词的适当形式+其他

　　e. g. Only in that way could we solve the problem.

　　Only when he left did I feel lonely.

　　5. Heighten(v.提高、升高)heightened(adj.提高的);increase(v.提高)increased(adj.提高的)