下肢的浅静脉有
A．胫前静脉 B．胫后静脉 C．贵要静脉D．大隐静脉 E．胭静脉
参考答案：D
（-x2）3÷（-x ）3=_____ ．
—Ann isn’t going out this evening,is she?
—________.She has to stay at home to finish her task.
A．Yes,she does
B．No,she doesn’t
C．Yes,she is
D．No,she isn’t
