最典型的初级社会关系是（）
A、家庭中的关系
B、宗族中的关系
C、部落中的关系
D、师徒间的关系
参考答案：A
I'm sure I ___in a certain key university at this time next year．
A．am studying
B．will have studied
C．will be studying
D．will study
Every one of us must know this: _________ we live can we save the earth．
A．by changing the way only
B．by only changing the way
C．only by changing the way
D．by changing only the way
