— Did you scold him for his carelessness？ — Yes, but______it.
A. I"d rather do
B. I" d rather not have done
C. I should do
D. I"d better not do
齿轮机构中，对于精度不高及圆周速度不大的大型齿轮，如果损坏一个或几个相邻齿，可以用镶齿法进行修复。 ()
What does Matthew Kahn think of the new findings？
A. He thinks highly of them.
B. He is confused by the mixed messages.
C. He can easily understand them.
D. He doubts their validity.
微信支付 
支付宝支付