第5题: [单项选择]It's necessary that the problem ______ in some way or other. A. is settled B. be settled C. was settled D. has been settled 参考答案:B 答案解析:[解析] 考查虚拟语气。it is necessary(essential...)that句子中that后的从句应为虚拟语气,谓语动词用should+动词原型,should可以省略。故本题答案为[B]
第12题: [单项选择]腰椎穿刺的常规部位是() A. 第2~3腰椎棘突间隙 B. 第1~2腰椎棘突间隙 C. 第3~4腰椎棘突间隙 D. 第4~5腰椎棘突间隙 E. 以上均为常规穿刺部位 参考答案:C 答案解析:腰椎穿刺点通常以双侧髂嵴最高点连线与后正中线的交会处为穿刺点,相当于第3~4腰椎棘突间隙。此处在马尾神经以下,不会伤到神经,并且棘突平直,棘突间隙大,容易进针。故本题选C。