出生时新生儿身长平均是()
A.36cm
B.40cm
C.46cm
D.50cm
E.56cm
参考答案:D
His wife ______ his children was invited to the party.
A.and
B.or
C.aswellas
D.butalso
产生频率崩溃的原因为()严重不足。