an____border ____ those arguing for computers in the classroom on the ____ of students' career _____ and those arguing for computers in the classroom for _____reasons of _____ education reform.
[参考译文]有些人为了学生的就业前景为教室里放置电脑而辩，有些人为教育的彻底改革中更为广泛的理由为教室里放置电脑而辩，这两群人之间有一条无形的界线。
参考答案：invisible ,divides,behalf,prospects,broader,radical
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______ most of the world's volcanoes, they are not always found at the _______ of the great _______ plates that _____ _____ the earth's surface; on the contrary, many of them lie _____ in the ______ of a plate.
[参考译文]跟世界上的大多数火山不同的是，它们(热点)并不总是在由构成地球表面巨大漂流板块之间的边界上出现；相反，它们中有许多位于一个板块较纵深的内部。
参考答案：unlike,boundaries,shifting ,make up ,deep ,interior