一、选择题(每小题2分,共20分)1.科学技术迅猛发展,人类观测的视野朝着宏观和微观两个方面不断延伸,大到宇宙小到夸克,空间尺度大小各异.以下四个物体尺度最小的是().(A)电子(B)太阳系(C)分子(D)地球图12.图1标出的构成干电池的几种材料,通常条件下属于绝缘体的是().(A)锌筒(B) First, the multiple-choice questions (2 points for each question, a total of 20 points) 1. The rapid development of science and technology, human observation field of vision in both macroscopic and microscopic aspects continue to extend, as large as the universe is small to quark, the size of the spatial scale varies. The following four objects have the smallest scale (). (A) Electron (B) Solar System (C) Molecule (D) Earth Figure 12. Several materials that make up the dry cell, indicated in Figure 1, are usually insulators under conditions ( (A) Zinc Cartridge (B)