听力原文：Due to the continual rain the school sports meet has been postponed again till further notice from the principal's office.
What does the speaker mean？
A. The sports meet has been cancelled.
B. The sports meet has been held despite the rain.
C. The time has been set for the sports meet.
D. When the sports meet will be held is yet to be known.
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在定义一个关系结构时，应该说明()。
A. 字段、数据项及数据项的值
B. 属姓名、属性数据类型及位数
C. 关系名、关系类型及作用
D. 记录名、记录类型及内容
e=0.85时的基底压力最大值与下列______ 项值接近。
A. 387.5kN/m2
B. 393.6kN/m2
C. 400.1kN/m2
D. 409.1kN/m2
该年我国乡镇企业总产值占农村社会总产值的多少？()
A. 1/2弱
B. 1/2强
C. 1/4弱
D. 1/4强
若某一组考虑地震作用组合的弯矩设计值为15000kN·m，轴力设计值为3000kN，大偏心受压，且已计算出Mc=17655kN·m，Msw=1706kN·m，试确定剪力墙端部受拉(受压)配筋面积 As(A's)(单位：mm2)最接近 ______ 项数值。
A. 6321
B. 4282
C. 3301
D. 2237
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