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问题 单项选择题

经土壤传播的意义大小，取决于（）。

A.病原体在土壤中的存活时间

B.易感者与土壤的接触机会

C.个人卫生习惯

D.A、B、C均不是

E.A、B、C均是

答案

参考答案：E

单项选择题

我国公路工程建设监理机构组织模式分为______。

A．工程指挥部管理、业主自管和社会监理管理模式
B．平行承发包、设计/施工总分包和工程项目总承包模式
C．工程项目总承包管理、施工联合体和施工合作体模式
D．直线式、职能式、直线职能式和矩阵式监理模式
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单项选择题

Which of the following is true about the origins of baseball

A．Historians agree that baseball was invented by Abner Doubleday.

B．Baseball, as played in the early 19th century, differed very little from today's game.

C．As early as the 1700s, English boys played a game called "baseball".

D．The first standard set of baseball rules was established at the turn of the century.
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