It took ______ for the world to increase its population from 1 billion to 4 billion.A) 100 yearsB) 145 yearsC) 1975 yearsD) Over two million years

题目

It took ______ for the world to increase its population from 1 billion to 4 billion.

A) 100 years

B) 145 years

C) 1975 years

D) Over two million years

相似考题

1.In general, attempts to smooth out period to period resources will _____ the scheduled time and _____ project costs.A.Increase, decrease.B.Increase, increaseC.Increase, increase or decrease.D.Decrease, decrease.E.Decrease, increase.

2.185 In general, attempts to smooth out period to period resources will _____ the scheduled time and _____ project costs.A. Increase, decrease.B. Increase, increaseC. Increase, increase or decrease.D. Decrease, decrease.E. Decrease, increase

3.6 Management reserves are normally defined as a % of the total budget. As a project progresses, the project manager wants the $ value of management reserve to _____, whereas the customer wants the management reserve to _____.A. Increase, increase.B. Increase, decrease.C. Decrease, decrease.D. Decrease, increase.E. Remain the same, return to customer

4.Management reserves are normally defined as a % of the total budget. As a project progresses, the project manager wants the $ value of management reserve to _____, whereas the customer wants the management reserve to _____.A . Increase, increase.B . Increase, decrease.C . Decrease, decrease.D . Decrease, increase.E . Remain the same, return to customer.

更多“It took ______ for the world to increase its population from 1 billion to 4 billion.A) ”相关问题

  • 第1题：

    67 In general, attempts to smooth out period to period resources will _____ the scheduled time and _____ project costs.

    A. Increase, decrease.

    B. Increase, increase

    C. Increase, increase or decrease.

    D. Decrease, decrease.

    E. Decrease, increase


    正确答案：B

  • 第2题：

    The approaching 4G mobile communication systems are projected to （ ） still remaining problems of 3G systems and to provide （ ） new services ,from high-quality voice to high-definition video to high data-rate wireless channels.[1分]

    A.solve

    B.solving

    C.reduce

    D.increase


    正确答案：A

  • 第3题：

    4．It __________ eight years to build the Dam(大坝) from 1998 t0 2006．

    A．spends

    B．costs

    C．paid

    D．took


    正确答案：D

  • 第4题：

    88 Management reserves are normally defined as a % of the total budget. As a project progresses, the project manager wants the $ value of management reserve to _____, whereas the customer wants the management reserve to _____.

    A. Increase, increase.

    B. Increase, decrease.

    C. Decrease, decrease.

    D. Decrease, increase.

    E. Remain the same, return to customer


    正确答案：E

  • 第5题：

    查询订购单号(字符型，长度为4)尾字符是“1”的错误命令是

    A．SELECT*FROM订单WHERE SUBSTR(订购单号，4)=“1”

    B．SELECT*FROM订单WHERE SUBSTR(订购单号，4，1)=“1”

    C．SELECT*FROM订单WHERE“1”$订购单号

    D．SELECT*FROM订单WHERE RIGHT(订购单号，1)=“1”


    正确答案：C
    解析：函数SUBSTR(字符表达式，起始位置，长度)表示从指定表达式的起始位置取一个指定长度的子串作为函数值。没有设定长度时，系统默认自定长度为1。 RIGHT(字符表达式，长度)表示从指定表达式的右端取一个指定长度的子串作为函数值，没有设定长度时，系统默认自定长度为1。故选项C为错误命令，选项A和选项B都使用 SUBSTR()作为查询条件，都能够实现从订购单号的第四个字符开始取长度为1的字符串，由于订购单号长度为4，因此取得的结果就是尾字符串。选项D使用RIGHT()函数，从订购单号的末尾取长度为1的字符串，因此也是正确的。选项C中的查询条件“1”$订购单号只能测试字符“1”是否在订购单号中出现，不能测试尾字符是否为“1”。

  • 第6题：

    真核生物ITS序列由ITS1和ITS2两部分组成。


    编码序列

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