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问题 填空题

内能是指物体内部______做______运动所具有的动能和______的总和．因为物质都是由分子组成的，并且分子在永不停息地做______运动，分子之间总存在相互作用的______和______，因此可以肯定，一切物体都具有______．

答案

内能是指物体内部所有分子做无规则运动所具有的动能和分子势能的总和．

因为物质都是由分子组成的，并且分子在永不停息地做无规则运动，分子之间总存在相互作用的引力和斥力，因此可以肯定，一切物体都具有内能．

故本题答案为：所有分子；无规则；分子势能；无规则；引力；斥力；内能．

多项选择题

从日本进口动物及其产品报检时，除提供合同、发票、装箱单、各运程提单等贸易单证外，还应按要求提供( )。

A．输出国官方检验检疫机构出具的检疫证书

B．《中华人民共和国进境动植物检疫许可证》

C．装船前检验证书

D．相关的木质包装声明和官方出具的《植物检疫证书》
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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.

11（）

A.moreover

B.secondly

C.accordingly

D.generally
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