第15题: [单项选择]Questions 6 and 7 are based on the following news.According to news, the West Virginia coal mine disaster A. caused minor injuries. B. was the worst one since 1984. C. was caused by terrorist attack. D. happened in early mornin 参考答案:B 答案解析:[听力原文] 6-7 Twenty-five miners are now known to have died and four are missing in an accident
A. Displacement B. Arbitrariness C. Duality D. Productivity 参考答案:D 答案解析:语言的普遍特征(Design features)包括以下几个:语言是任意的(arbitrariness),语言具有双层结构 (duality),语言是多产的(productivity),语言是移位的(
第29题: [单项选择]慢性淋巴细胞白血病(慢淋)的血液学特点不正确的是 A. 血液中淋巴细胞≥60% B. 骨髓中淋巴细胞>40% C. 淋巴细胞PAS染色呈阳性 D. 原淋和幼淋细胞较少见 E. 大多数病例为T淋巴细胞异常增生 参考答案:E 答案解析:慢性淋巴细胞性白血病多为B淋巴细胞异常增生。