以下说法正确的是
A．人老了自然要掉牙B．牙齿好坏与刷牙无关C．牙好是天生的D．人老掉牙不是自然规律E．定期检查不得牙病
参考答案：D
Tom worked very hard, ______ that he would be able to buy a car of his own in two years.
A．hoped
B．to hope
C．hoping
D．and hoping
非维修领料不允许领用配件，而且每月都要及时关闭吗？（）
A.是
B.不是
C.不确定
