作物从播种到成熟收获所经历的具体天数，叫作物的（）.

A:Hello!May I speak to Tom, please
B:Speaking. [16]
A:This is Bill. I called you yesterday, but youwere not at home.
B:[17]I need to prepare something for my tripto Shanghai.
A:ShanghaiThat’s where the World Exposition(世博会)is being held. How lucky you are!
B:So I am. [18]
A:I, have a birthday party next Friday. Wouldyou like to come
B: [19]My plane will take off next Wednesday.
A:What a pity(遗憾)that you can’t come![20]
B:Thank you very much. Bye!
A:Bye!
A．Who’s that
B．I’d like to, but I’m afraid I can’t.
C．I’m buying something for my aunt.
D．Have a good trip!
E．I was shopping at that time.
F．Who are you
G．What did you call me for

一个足球60元，王老师带的钱能买10个足球或5个篮球．篮球的单价是多少元？

先天性胆管扩张症Ⅴ型（）

A.肝内胆管囊状扩张

B.胆总管壁憩室样突出

C.胆总管末端膨出

D.肝内外胆管囊状扩张

E.胆总管囊状扩张

三角形中最大角α的范围为______，最小角β的范围是______．

手三阳经的循行规律是（）。

A.从胸走手

B.从手走头

C.从头走足

D.从胸走足

E.从手走胸