节段性室壁运动功能障碍常见于冠心病。
参考答案：对
He can't ____ English? He is ____ a lie. [ ]
A. say; telling
B. speak; saying
C. speak; telling
D. talk; speaking
设f（x）=（x-1）ln（x-1）+x，f（ex+1）=（）。
A．xex
B．xex+ex
C．xex+ ex-1
D．xex+ex+1
