分娩后子宫的重量约为多少g（）
A.50
B.100
C.300
D.500
E.1000
参考答案：E
试题二（15 分）阅读以下说明，回答问题 1～4，将解答填入答题纸的对应栏内。【说明】FTTx+LAN 是实现宽带接入的常用方法，基本结构如图2-1 所示。
【问题1】（2 分）FTTx+LAN 接入方式采用什么拓扑结构？
Which of the following statements regarding separate trading of registered interest and principal of securities (STRIPS) is TRUE A 20-year Treasury bond can be used as the basis for:（）
A. 40 coupon strips and 1 principal strip.
B. 40 principal strips and 1 coupon strip.
C. 41 coupon strips.
