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问题 选择题

阳阳在学习了“声是什么”以后，总结出以下四点，其中你认为错误的是（　　）

A．声音是靠物体的振动产生

B．频率越大，响度越大

C．声音不能在真空中传播

D．声音在固体中传播的速度大于340m/s

答案

A、声音是由于发声体的振动产生的，此选项描述正确，不符合题意；

B、频率越大，音调越大，此选项描述错误，符合题意；

C、声音的传播需要介质，故不能在真空中传播，此选项描述正确，不符合题意；

D、声音在固体中传播的速度大于340m/s，此选项描述正确，不符合题意；

故选B．

单项选择题

《红高粱家族》中王文义为什么会跟着余司令打鬼子的？（）

A.他主动要求的

B.余司令招兵买马时觉得他适合

C.奶奶觉得他适合想余司令推荐的

D.他的三个儿子被炸死后死后，他的妻子把他送到我家，要求奶奶帮着说情留下他
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单项选择题

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.

16（）

A.point

B.show

C.work

D.imply
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