【单选题】男孩,1岁半。因生长发育及语言、运动落后就诊。刚会独站,不会说话。身长63cm,心率84次/min前囟1.5cm,鼻梁扁平,眼距宽,舌大,常伸出口外,皮肤粗糙,四肢短,腹部膨隆。为确诊,应首选哪项检查( )。
【单选题】The police asked him to _________what he had seen. [ ]
【单选题】保安过滤器又称精密过滤器,可以去除的物质是 ( )
A.
水中的游离氯,对有机物及色素也有较高的去除率。
【单选题】He gave up smoking to_________ the money for his son’s education.
【单选题】He__________ a good example to us. [ ]
【单选题】He was exhausted because he had________ all night studying. [ ]
【单选题】在分压式偏置放大电路的交流通路中,上偏置电阻R b1 和下偏置电阻R b2 的连接关系是________。
【单选题】In order to become healthier, he ____ running every afternoon. [ ]