具有4个侧枝的马鹿茸，称为______
A．大挺 B．二杠茸C．三岔 D．三叉茸E．四岔
参考答案：E
情景交际
A: I have a lot of 1 at home.
B: So 2 3 .
A: 4 not allowed 5 study at a friend's house.
B:I have to 6 at home on school nights.
A: I'm not 7 to go out, 8 .
B: But I can 9 TV on Friday nights.
A: That's 10 .
以生命风险作为保险事故的人寿保险，其主要风险因素是( )。
A．伤残率
B．死亡率
C．意外事故
D．自杀
