Raji细胞是从Burkitt淋巴瘤患者分离建立的B细胞株，表面有大量C1q、C3b、C3d和SmIg。()
参考答案：错
一个数的亿位、千万位上都是9，万位上是8，十位上是4，其余各位上都是0，这个数写作______，改写成万作单位是______，省略亿后面的尾数是______．
the buildings were knocked down in the earthquake in the city of Tangshan..
A．A great deal of
B．A great many
C．The number of
D．A great many of
