一般情况下，焦炭的灰分比配合煤的灰分（）。
A.大
B.小
C.差不多
参考答案：A
若关于x的方程|x|=ax+1仅有一个根x0，且满足x0＜0，则实数a的取值范围是（ ）。
Seeing the enemy, Gary was behaving as though nothing ______.[ ]
A. happened
B. had happened
C. would happen
D. was happening
