妊娠38周正常妊娠的羊水量约为()
A.500ml以下
B.500~800ml
C.1000ml
D.1200ml
E.1500ml
参考答案:C
John has really got the job because he showed me the official letter _____ him it.
A.offered
B.offering
C.to offer
D.to be offered
用高级语言编写的程序称之为【 】。