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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Which of the following statements is true of the vocal cords?
A.
In male adults the vocal cords are typically longer than in female adults.
B.
In male adults the vocal cords are typically shorter than in female adults.
C.
In male adults the vocal cords are typically thinner than in female adults.
D.
The vocal cords in both male and female adults are of the same lengt
【单选题】拟在8度烈度场地建一桥墩，基础埋深2.0m，场地覆盖土层厚20m，地质年代均为Q4，地表下为5.0m的新近沉积非液化黏性土层，其下为15m的松散粉砂，地下水埋深dw＝5.0m，按《公路工程抗震设计规范》(JTJ 004—89)说明本场地地表下20m范围土体各点σ0/σe的变化情况，下述说法正确的是( )。
A.
从地面往下二者之比随深度的增加而不断增加
B.
从地面往下二者之比随深度的增加而不断减少
C.
从地面5m以下二者之比随深度增加而不断增加
D.
从地面5m以下二者之比随深度增加而不断减少
【单选题】父亲把所有财物平均分成若干份后全部分给儿子们，其规则是长子拿一份财物和剩下的十分之一，次子拿两份财物和剩下的十分之一，三儿子拿三份财物和剩下的十分之一，以此类推，结果所有儿子拿到的财物都一样多，请问父亲一共有几个儿子?( )
A.
6
B.
8
C.
9
D.
10
【单选题】What is this lecture mainly about?
A.
A process for improving drainage systems
B.
A comparison of different types of drainage systems
C.
The relationship among the most common drainage systems
D.
The changes that occur in drainage systems over time
【单选题】The intellectually______enterprise of science depends on free communication.
A.
depressing
B.
depressed
C.
exhilarating
D.
exhilarated