题型:英语知识运用 题类:期中考试 难易度:较难
测年份:2017
To help the blind, young Louis Braille created a system _________ six raised dots representing different letter; _____ the blind can easily recognize Brail with the fingers now.
题型:英语知识运用 题类:期中考试 难易度:较难
测年份:2017
It ________ that after the ash covered the people who failed to flee the city, their bodies nearly completely broke down and disappeared, ________ empty spaces in the ash.