2014
高考英语完形填空专题训练精品题(96)及答案 a temperature is measured by means of a thermometer (温度计). one general form of thermometer depends upon the fact that most solids and liquids expand as their temperature rises. there are one or two exceptions. there is, for instance, a kind of steel called invar (from “invariable”) which does not change its dimensions as temperature changes; it is valuable for making pend