根据短文内容，从方框中选择恰当的单词完成句子。部分单词在填入前需进行词形转换，每个单词只能用一次，每空只能填一词。

    It is helpful for English readers to improve reading speed. Beforeto read the material(素材), learn about the background knowledge.its help, you can read faster. While reading, many students think thething they should do is to look up the new words. That will make them feel bored and disturb (打扰) their speed! What's, they always pay more attention to English grammar than the main idea of the material. To tell the truth, you'd better grasp(领会) the main information in a short time., this is the key to making your reading speed faster and faster.