第16题: [单项选择]{{B}}Passage one
Questions 26 to 28 are based on the passage you have just heard.
{{/B}} A. The easy transportation of people and all the things. B. The large area of forest. C. A variety of animals. D. All kinds of weather. 参考答案:A 答案解析:[听力原文]
What did rivers and lakes make possible according to the passage
第33题: [单项选择]下列对骨质疏松的描述中,错误的是() A. 是指单位体积内骨组织的含量减少 B. 骨质疏松使骨的结构脆弱,骨折的危险性增加 C. X线主要表现为骨密度减低,在长骨可见骨小梁变细、增多 D. X线上可见骨皮质变薄和出现分层 E. 若发生于脊椎,可使椎间隙增宽,椎体甚至发生压缩改变 参考答案:C 答案解析:骨质疏松是指单位体积内骨组织的含量减少,X线主要表现为骨密度减低,在长骨可见骨小梁变细、数量减少。