保险合同成立后，除《保险法》另有规定或者保险合同另有约定外，（）不得解除合同。
A.保险人
B.投保人
C.被保险人
D.受益人
参考答案：A
The school board is made up of parents who ________ to make decisions about school affairs.
A．had been elected
B．had elected
C．have been elected
D．have elected
I was giving a talk to a large group of people, the same talk I _______ to half a dozen other groups.
A．was giving
B．am giving
C．had given
D．have given
