使用注意大苦大寒易伤胃气。胃纳不佳及阴虚体弱者慎服的药物是（）
A.秦艽
B.木瓜
C.防己
D.北五加皮
E.桑寄生
参考答案：C
____, it was hard for him to top the list of all the performers. [ ]
A. Would try as he
B. Try as he would
C. As he would try
D. Would as he try
若一个元素序列基本有序，则选用______方法较快。
A．直接插入排序
B．直接选择排序
C．堆排序
D．快速排序
