人们常用“水火不相容”形容两个相克的事物。水常用来灭火，但用之不当水也会被火“烧

一无牙颌患者，戴用全口义齿1个月。主诉在大张口、说话和打哈欠时义齿均不掉，但吃饭时易脱落 。

其原因为 （）

A.基托不密合

B.基托边缘伸展过长

C.咬合不平衡

D.后堤区封闭差

E.人工牙排列位置不当

亚洲地势的主要特点是[ ]

A、中部低，四周高

B、中部高，四周低

C、东部高，西部低

D、东部低，西部高

依次填入下文横线处的句子，与上下文衔接最恰当的一组是（   ）

（1）外交部发言人秦刚25日表示，        ，要求印尼政府尽快释放中方渔民和渔船。

（2）语言的丰富多彩，往往就是思想的丰富多彩的反映，          很难写出生动活泼、严密周到的文章来的。因此，不从训练自己的思想着手来加强辞章修养，很难有大的效果。

（3）温 * * 表示，当前中德在各领域的互利合作进展顺利。双方要坚持从战略高度和长远角度处理两国关系，            ，推动两国关系持续健康发展。

①中方对印尼有关当局抓扣中国渔船事件表示强烈不满

②印尼有关当局抓扣中国渔船事件引起中方的强烈不满

③一个思想僵化、粗枝大叶的人             ④一个粗枝大叶、思想僵化的人

⑤保持高层交往，加强沟通和协作           ⑥加强沟通和协作，保持高层交往

A．①④⑤

B．②③⑥

C．①③⑤

D．②④⑥

APU有无恒速装置？为什么？（）

A.有，因为发动机也需要恒定转速来保证恒定电压

B.没有，因为发电机不需要输出恒定电压

C.有，因为“就是个小发动机”所以也有恒速装置

D.没有，因为工作转速是恒定的，不需要有恒速装置

Bernard Bailyn has recently reinterpreted the early history of the United States by applying new social research findings on the experiences of European migrants. In his reinterpretation, migration becomes the organizing principle for rewriting the history of pre-industrial North America. His approach rests on four separate propositions.

The first of these asserts that residents of early modern England moved regularly about their countryside.- migrating to the New World was simply a "natural spillover". Although at first the colonies held little positive attraction for the English they would rather have stayed home--by the eighteenth century people increasingly migrated to America because they regarded it as the land of opportunity. Secondly, Bailyn holds that, contrary to the notion that used to flourish in American history textbooks, there was never a typical New World community. For example, the economic and demographic character of early New England towns varied considerably.

Bailyn’s third proposition suggests two general patterns prevailing among the many thousands of migrants: one group came as indentured servants, another came to acquire land. Surprisingly, Bailyn suggests that those who recruited indentured servants were driving forces of transatlantic migration, These colonial entrepreneurs helped determine the social character of people who came to pre-industrial North America. At first, thousands of unskilled laborers were recruited: by the 1730’s, however, American employers demanded skilled workers.

Finally, Bailyn argues that the colonies were a half-civilized hinterland of the European culture system. He is undoubtedly correct to insist that the colonies were part of the Anglo-American empire. But to divide the empire into English core and colonial periphery, as Bailyn does, devalues the achievements of colonial culture. It is true, as Bailyn claims, that high culture in the colonies never matched that in England. But what of seventeenth-century New England, where the settlers created effective laws, built a distinguished university, and published books Bailyn might respond that New England was exceptional. However, the ideas and institutions developed by New England Puritans had powerful effects on North American culture.

Although Bailyn goes on to apply his approach to some thousands of indentured servants who migrated just prior to the revolution, he fails to link their experience with the political development of the United States. Evidence presented in his work suggests how we might make such a connection. These indentured servants were treated as slaves for the period during which they had sold their time to American employers. It is not surprising that as soon as they served their time they gave up good wages in the cities and headed west to ensure their personal independence by acquiring land. Thus, it is in the west that a peculiarly American political culture began, among colonists who were suspicious of authority and intensely anti-aristocratic.

Which of the following best summarizes the author’s evaluation of Bailyn’s fourth proposition（）

A. It is totally implausible

B. It is partially correct

C. It is highly admirable

D. It is controversial though persuasive