冷凝集试验正常参考值是（）
A.<1：20
B.<1：40
C.<1：80
D.<1：160
E.<1：320
参考答案：B
We go back home ______ 8: 00 ______ the evening. [ ]
A. at; on
B. on; in
C. at; in
D. in; on
---Is there any present for me ?
---Of course .This necklace __you .
A．is short for
B．is named for
C．is intended for
D．intended to
