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第二节：完形填空（共20小题；每小题1分，满分20分） 请认真阅读下面短文，从短文后个题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 Another person’s enthusiasm was what set me moving toward the success I have achieved.That person was my stepmother. I was nine years old when she enterd our home in rural Virginia. My father__36__me to her with these words:“I would like you to meet the fellow who is___37  for being the worst boy in this county and will probably start throwing rocks at you no ___38  than to回答下列有关问题：（1）地壳中含量最多的金属元素是 （填元素符号）．（2）“结构决定性质”，请画出钠原子的原子结构示意图： ，该原子容易 电子（填“得到”或“失去”），成为 （填“阴离子”或“阳离子”）．（3）HClO4中氯元素的化合价是 ．（4）在溶质质量分数为15%的NaCl溶液中加入3gNaCl和17g水完全溶解后，所得溶液中溶质质量分数为 ．