【单选题】_____ are the twins arguing about with Lily?
【简答题】(1)引例:如图①所示,直线AD ∥ CE.求证:∠B=∠A+∠C. (2)变式:如图②所示,a ∥ b,请判断∠A 1 、∠A 2 、∠A 3 、∠A 4 、∠A 5 之间的大小关系,直接写出结论,无需证明. 答:______. 如图③a ∥ b,请判断∠A 1 、∠A 2 、∠A 3 、∠A 4 之间的大小关系,直接写出结论,无需证明. (3)推广:如图④a ∥ b,请判断∠A 1 、∠A 2...
【单选题】When is Lily going? She is going _____ July. [ ]
【单选题】When is Lily allowed to use the Internet at home?
A.
When she does some business.
B.
When she plays computer games.
C.
When she meets new friends.
D.
When she does her homework.