问题
It is hard for people in the country to believe that the soldier could survive in such ________ weather conditions.[ ]
A: serious
B: severe
C: positive
D: sceptical
B: severe
C: positive
D: sceptical
正确答案是：
同类题型
periment shows that proper amounts of exercise, if regularly, can improve our health.
Stand up _____ you fall down, and I’m sure you’ll succeed in time.[ ]
Are you satisfied with what the captain explained? —Not at all. It couldn’t have been________.