赞题库-背景图
单项选择题

Laptops in the classroom enhance the academic performance of students. They do in fact allow students to do more, like engage in online activities and demonstrations, 1 more easily on papers and projects, access information from the Internet. 2 , because students can type 3 faster than they can write, those who use laptops in the classroom tend to take more notes. Obviously it is 4 to draft more complete notes that precisely capture the course content.
5 , a new research demonstrates that students, writing out their notes on paper, actually learn more because they have a stronger conceptual 6 . Across some experiments, taking notes by hand requires different types of cognitive processing, and these different processes have 7 for learning. Writing by hand is slower and more 8 than typing, and students cannot possibly write down every word in a lecture. 9 , they listen, digest, and 10 so that they can capture the 11 of the information. Thus, taking notes by hand forces the brain to engage in some heavy "mental 12 ," and these efforts foster comprehension and retention. 13 , when typing students can easily produce a written record of the lecture without processing its meaning, 14 faster typing speeds allow students to 15 a lecture word for word without devoting much thought to the content.
16 altering students" cognitive processes and reducing learning, laptops pose other 17 in the classroom. In most typical college settings, Internet access is 18 , and evidence suggests that when college students use laptops, they spend 40% of class time using applications 19 to coursework and are distracted for half the class. They are more likely to 20 up task and less satisfied with their education.

A.By contrast
B.By convention
C.By comparison
D.By analogy