题目

阅读理解 French writer Frantz Fanon once said: ＂To speak a language is to take on a world, a culture.＂ Since the world changes every day, so does our language. More than 300 new words and phrases have recently made it into the online Oxford Dictionary, and in one way or another they are all reflections of today's changing world. After a year that was politically unstable, it's not hard to understand the fact that people's political views are one of the main drives of our expanding vocabulary. One example is ＂clicktivism＂, a compound of ＂click＂ and ＂activism＂. It refers to 我们在考试时许多学科要用到2B铅笔填答题卡，电脑可以直接读取答题卡上的答案，是因为2B铅笔中的石墨是        （选填“导体”或“绝缘体”），若使用了不合格的2B铅笔，由于铅笔芯的导电性变_______ （选填“强”或“弱”），这样可能使电脑无法识别。