1.A boat is reported to have been in       (相撞) with an oil tanker. 
答案:collision
2.They could see no       (优点) in discussing it further. 
答案:virtue
3.Everyone of us should be m       to the disabled. 
答案:merciful
4.You might want to       (跳过)the exercises in this chapter. 
答案:skip
5.If we don’t unload it soon,the grain will start       (腐烂). 
答案:rotting