题目 :1.某期刊封面上有如下一个分子的球图 1　某分子的球棍模型图棍模型图 ,如图 1所示。图中“棍”代表单键或双键或叁键。不同颜色的球代表不同元素的原子 ,该模型图可代表一种 (　　 )。Ａ 氨基酸Ｂ 醇钠Ｃ 卤代羧酸Ｄ 酯(2 0 0 0年全国高考化学试题 2 2题 )2 .(1)如图 2 Topics: 1. A ball of the following molecule is shown on the cover of a periodical. Figure 1 The stick figure model of a certain molecule is shown in Figure 1. The “stick” in the figure represents a single or double or triple key. Different colored balls represent the atoms of different elements. The model diagram can represent a (). A Amino acid B sodium alcohol C halocarboxylic acid D ester (2000 national college entrance examination chemistry test 22 questions) 2. (1) as shown in Figure 2