单选题
In a small school on the South Side of Chicago, 40 children between the ages of five and six sit quietly learning in a classroom. In 27 of each of them is a computer running software called Reading Eggs. Some are reading a short story, others 28 sentences with words they are learning. As they complete each task they move through a cartoon map that shows how far they have 29 in reading and writing. Along the way they collect eggs which they can use to buy objects in the game, such as items to 30 their avatar's apartment. Now and then a child will be taken 31 for scheduled reading periods with one of the two monitoring teachers. The director says this sort of teaching, blending software with human 32 , helps her pupils learn faster. It also allows teachers at this school to spend more time teaching and less time 33 written work and leading pupils through dull drills of words and numbers. The idea that technology can revolutionize (彻底改变；使革命化) education is not new. In the 20th century almost every new 34 was supposed to have big implications for schools. In many classrooms, computers have been used to improve 35 and keep pupils engaged. But they did not transform learning in the way their boosters predicted. It is wise, therefore, to be skeptical about the claims made for the current wave of innovation. Yet there are also 36 to believe that a profound shift is occurring. A. intervention F. ways K. efficiency B. building G. furnish L. progressed C. aside H. front M. reasons D. invention I. build N. back E. method J. marking O. doing
【答案解析】[考点] 固定搭配 spend more time (in) doing sth. 是固定搭配，因此该空需要一个动名词，又根据and引导的并列结构可知该空填入的词需要与leading对应，也可以判断该空的词性。根据句意可知marking更符合，marking written work意为“批改书面作业”。