关于黄土高原生态建设的叙述，正确的是（ ） A．为实现可持续发展，必须进行生态建

在横线上填“＞”、“＜”或“=”．

5.12×1.01______5.12

0.97×43.15______0.97

4.37×0.99______4.37

1×0.95______0.95．

流水施工的表达方式除网络图外，主要还有横道图和垂直图。这两种图形均可以清楚地表达出( )。

A．每单位时间完成的工作量

B．计划期间内完成的工作量

C．每个施工过程的工作量

D．各施工过程的时间和空间状况

IP数据报的报头区有一个生存周期域，当该域为( ) 时数据报将被丢弃，避免死循环的发生。

A．0

B．1

C．00001111

D．11111111

下列灭火方法不恰当的是(    )

A．实验时碰倒酒精灯，酒精在桌上燃烧，可用湿抹布扑盖

B．堆放杂物的纸箱着火时，可以喷大量水

C．电线短路引起电器着火时，可用水浇灭

D．炒菜时油锅里的油着火时，可用锅盖盖灭

A new study finds that blacks on death row (1) of killing whites are more likely to be executed than whites who kill minorities. It also concludes that blacks who kill (2) minorities are (3) likely to be executed than blacks who kill whites. For example, there is more than a twofold greater risk that an African-American who killed a white will be executed than a white person who kills a (4) victim. A Hispanic is at least 1.4 (5) more likely to be executed (6) such an offender kills a white.

The researchers of the study believe that there are two (7) explanations.. First, prosecutors often win (8) office if they win well-publicized cases. When a black kills a white, such killings gets more (9) and this idea can be (10) by many famous cases. (11) , the court judges at the state level are often (12) to elections, called retention elections. Retention election or judicial retention within the United States court system, is a periodic process, in which the voter (13) approval or disapproval for the judges presently (14) their position, and a judge can be removed from the position if the (15) of the citizens vote him or her out. Just as the researchers (16) out, death penalty is (17) political.

The findings of the study, in short, show that American justice systems clearly (18) white lives more than those of blacks or Hispanics. The researchers also say their findings (19) serious doubts about (20) that the U.S. criminal justice system is colorblind.

9（）

A.attendance

B.attraction

C.tempt

D.publicity