A:1秒
B:( 2 ﹣1)秒
C:( 2 +1)秒
D:22 秒
A: Hello, Kate. ____
B: That's beautiful. I like it.
A: ____
B: I need four.
B: They're funny.
A: You can also buy a T-shirt for your friend.
B: ____
A. Good idea.
B. What about these caps?
C. Come and look at this cap.
D. How many caps do you need?
E. Let's go.
2015年11月7日,两岸领导人实现了跨越66年时空的握手。据此回答(1)(2)题。
为什么永动机造不出来?