第3题: [单项选择]One of the reasons why black Americans could not easily mix in American society is ______. A. that most Americans are immigrants B. due to their skin color C. that they speak their language differently from Americans D. that they were free to keep their heritage 参考答案:B 答案解析:[参考译文]黑人美国人不能与美国融合的原因之一是……
[试题分析]本题为细节题。
[详细解答]这道题的答案在第二段的第四句话,“due to”一词就是“because of”的意思。
第19题: [单项选择]手外伤后,应尽可能使手处于功能位。手的功能位是() A. 腕背伸约10°~15°,掌指关节及指间关节呈半屈曲状态 B. 腕背伸约20°~25°,掌指关节及指间关节呈半屈曲状态 C. 腕背伸约20°~25°,掌指关节及指间关节微屈 D. 腕背伸约20°~25°,掌指关节及指间关节呈半屈曲状态 E. 腕背伸约10°~15°,掌指关节及指间关节微屈 参考答案:C 答案解析:腕背伸约20°~25°,掌指关节及指间关节微屈是手的功能位。