答案:D
补全对话。
Mother---M Jack—J
M: Jack! Are the football socks on ______ (1) bed?
J: Oh, yes.
M: Put ______ (2) away. You must look ______ (3) your things.
J: I'm ______ (4), but…
M: What's wrong?
J: My football socks ______ (5) broken. Can you ______ (6) them, Mum?
M: I think ______ (7). Give them ______ (8) me.
J: ______ (9) you are. Thank you very much.
M: You're ____ (10).
用绳子量桥高。在桥上将绳子4折垂至水面,余3米,把绳剪去6米,3折后,余4米,求桥高是()米
A.36
B.12
C.9
D.6