具下位子房、瘦果的科是（）
A、伞形科
B、姜科
C、五加科
D、菊科
参考答案：D
—I ________ a new house recently.
—Great. When ________ you ________ it?
A．have bought, did, buy
B．have bought, have, bought
C．bought, did, buy
D．bought, have, bought
