沉积物可根据颗粒大小来划分，砂相对较粗；粘土非常细
参考答案：对
尿干化学试带法是检测尿中哪种白细胞中的酯酶 （）
A.单核细胞
B.淋巴细胞
C.中性粒细胞
D.嗜酸性粒细胞
E.嗜碱性粒细胞
The author believes that it is the test system,________ the teachers, that is to blame for the heavy burden of middle school students.
A．other than
B．or rather
C．rather than
D．more than
