A. Brave and tough. B. Stubborn and arrogant. C. Well-liked and humorous. D. Stout and smart. 参考答案:A 答案解析:推理判断题。在南极探险,探险者不仅需要现代化的装备,而且要有足够的勇气和坚韧不拔的精神,二者缺一不可。正如文中所述:Modern science and inventions are revoluti
第6题: [单项选择]It is reported that crimes are most likely to happen in cities ______ a large percentage of unemployment. A. which they have B. that having C. that have D. where have 参考答案:C 答案解析:本题考查定语从句。该句意为“据报_道,在失业率高的地区最容易发生犯罪”。that在定语从句中作主语,其先行词是cities。虽然where能修饰cities,但它不能在从句中作主语。因此选C项。