第21题: [单项选择]The possibility that the explosion was caused by sabotage cannot be ______. A. broken out B. cancelled out C. ruled out D. wiped out 参考答案:C 答案解析:ruled out用线划掉,取消,排除,这里指不能排除阴谋破坏的可能性。break out爆发,逃脱;cancel out取消,抵消;wipe out擦掉,还清,消除。
第30题: [单项选择]In 1861 it seemed inevitable that the Southern states would break away from the Union.
A. strange B. certain C. inconsistent D. proper 参考答案:B 答案解析:[解析] 本句意思是“1861年,南方各州要从联盟中分裂开似乎是不可避免的。”句中inevitable意为“不可避免的,必然要发生的”。certain肯定的,必然的,与inevitable意思相近。如