在腹部，前正中线旁开4寸的经脉是：
A．足太阳膀胱经
B．足少阴肾经
C．足阳明胃经
D．足太阴脾经
E．足少阳胆经
参考答案：D
Jenny and Sue going to watch TV.[ ]
A. am
B. is
C. are
There was something wrong with the network, or the email ________ earlier.
A．could have been sent
B．might be sent
C．need have been sent
D．must be sent
