【单选题】—'Where is your mother?' —'_____' [ ]
A.
She works in a factory.
B.
She is in the kitchen, she's cleaning.
C.
She is a teacher in No.1 Middle School.
D.
She 1ikes watching TV .
【单选题】I had long coveted Polly Espy.
【单选题】I had long coveted Polly Espy.
【判断题】人因自然而生,人对自然的伤害最终会伤及人类自身。( )
【简答题】已知α∈( π 2 ,π),sinα= 5 5 ,则tan2α=______.
【单选题】I had long coveted Polly Espy.
【单选题】如果在数据库中已有同名的表,要通过查询覆盖原来的表,应该使用的查询类型是()