2017年公共英语考试五级考前练习单项选择题及答案（3）
1. Being ignorant of the law is not accepted as an ________ for breaking the law.
A) excuse B) intention C) option D) approval
2. Within two days， the army fired more than two hundred rockets and missiles at military ________ in the coastal city.
A) goals B) aims C) targets D) destinations
3. It is said in some parts of the world， goats， rather than cows， serve as a vital _______ of milk.
A) storage B) source C) reserve D) resource
4. “This light is too ________ for me to read by. Don‘t we have a brighter bulb some where”; said the elderly man.
A) mild B) dim C) minute D) slight
5. We have arranged to go to the cinema on Friday， but we can be ________ and go another day.
A) reliable B) probable C) feasible D) flexible
答案：ACBBD
