对鉴别原因未明的病毒性脑炎与功能性精神病,较有意义的检查是:()
A.脑超声检查
B.脑电图检查
C.脑脊液检查
D.脑血管造影
参考答案:C
水稻体细胞中含有染色体12对,则精子中的染色体数目是( )
A.12对
B.12条
C.24对
D.6条
The holiday we had been looking forward to _________ at last.
A.arriving
B.would arrive
C.arrived
D.have arrived