能全部通过七号筛，但混有能通过九号筛不超过95%的粉末（）
A．最粗粉
B．粗粉
C．细粉
D．最细粉
E．极细粉
参考答案：E
Since the epidemic appeared last winter, it ______ about a hundred lives. [ ]
A. takes
B. took
C. has taken
D. will take
若爸爸坐在奶奶的对面，则下面哪一个人必须与妹妹相邻
A．小明
B．阿姨
C．爷爷
D．妈妈
