第4题: [单项选择]Two thirds of the U.S. basketball players are black, and the number would be greater()the continuing practice of picking white bench warmers for the sake of balance. A. was it not because of B. had it not been for C. were it not for D. would it not have been for 参考答案:C 答案解析:
本题考查的是虚拟语气的倒装用法。省略if,将be动词提前,又因为前句是 would be greater,可见是一般现在时的虚拟语气,所以后半句要用were作谓语,因此C项正确。
第13题: [单项选择]男孩,1岁半。平日偏食,常有腹泻,咳嗽,已会独立行走,玩耍正常。近2个月来面色苍黄,逗之不笑,时有头部、肢体颤抖,不能独站。外周血象:血红蛋白100g/L,红细胞2.5×1012/L,白细胞数4×109/L,中性粒细胞分叶过多。本例可诊断为 A. 营养不良伴低钙血症 B. 慢性腹泻伴低钙血症 C. 缺铁性贫血伴低钙血症 D. 营养性巨幼红细胞贫血 E. 营养性缺铁性贫血 参考答案:D 答案解析:[解析] 发育退步、全身颤抖、腹泻是巨幼贫的较典型临床表现;红细胞降低较血红蛋白明显,中性粒细胞分叶过多是其血象特点。
第26题: [单项选择]以下对枚举类型名的定义中正确的是()。 A. enum a=one,two,three; B. enum aone=9,two=-1.three=200; C. enum a="one","two","four"; D. enum a"nine","two","three"; 参考答案:B 答案解析: