二化螟在水稻的（）和（）中越冬。
参考答案：茎杆；根茬
飞机保险具有综合性保险的特点，下列不是其包含的险种是（）。
A.责任保险
B.信用保证保险
C.人身意外伤害保险
D.财产保险
Jenny is on holiday now. I wonder ________.
A．when she will come back
B．when she came back
C．when will she come back
D．when did she come back
