今年四、五月份我国西南地区遭遇历史罕见的旱灾，我国最大淡水湖鄱阳湖水位下降到历史

发布时间：2017-05-23 15:39 │ 来源：www.tikuol.com

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问题：

今年四、五月份我国西南地区遭遇历史罕见的旱灾，我国最大淡水湖鄱阳湖水位下降到历史同期最低点。某村有1 200亩稻田急需灌溉，为了提高灌溉效率，当地政府增派灌溉车辆，使得效率是原来的1.5倍，结果提前10天完成任务，求原计划每天灌溉稻田多少亩？

考点：分式方程的应用

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下列溶液一定呈碱性的是 [ ]

A. c(OH^－)＞c(H^＋)

B. c(OH^-)＝1×10^－6mol/L

C. 使甲基橙变黄

D. pH=8的溶液

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（）

A.A

B.B

C.C

D.D

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以下关于作者、编辑和读者三者之间关系的说法，正确的是（）。

A.作者要为读者服务，满足读者的任何阅读需求

B.对于读者来说，编辑的作用是无足轻重的

C.读者能看到怎样的作品完全取决于编辑的眼光好坏

D.编辑有义务向作者及时传达读者的需求信息

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松毛虫发生区划分为突发区、偶发区和安全区3种不同类型。

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The United States government’s support of slavery was based on an overpowering practicality. Before America even had a history it was busy creating a (67) ethnic class for it to look down (68) . The history of black people in the United States begins with the birth of (69) . African Americans were (70) not just as a lower class of people, but simply as property, creating an (71) for equality that may never (72) Slaves were subjected to the poorest of living (73) , whippings not uncommon, and often having tight knit families, mothers and daughters, fathers and sons split when sold (74) from each other. Early slave resistance was often to the effect of (75) property, running away or just working (76) but sometimes went as far as killing masters and burning (77) buildings. In some instances masters were fast to (78) themselves from this by making lower class whites overseers, hoping they would (79) the brunt of the slave’s (80) . The United States would eventually (81) in the great pressure placed on it to (82) slavery. With slavery ended black and white people were able to live together as (83) . Some would say that this is still not the fact, since oppression (压迫) of (84) people did not end until today and widespread discrimination against them was constant. (85) slavery remained in the memories of African Americans, they still lived in fear from race related (86) . In the 1930s some African Americans began to align themselves.

A．nm

B．go

C．get

D．give

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