巴黎圣母院属于下面哪种建筑式样[ ]
A．希腊式
B．罗马式
C．中国古典
D．哥特式
答案：D
A teacher is _____ to be patient and not to lose his temper whatever mistakes his students make.
a. supposed b. meant c. claimed d. suggested
怎样解释电阻和电阻率？
