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一位诊断为慢性牙周炎的牙周病患者，已于2个月前完成牙周基础治疗，现需选择最佳手术方法。

袋深5～6mm，X线片：牙槽骨吸收不规则应选择（）。

A.牙龈切除术

B.改良Wndlnan术+骨成形术

C.引导性组织再生术

D.牙周翻瓣术+骨成形术

E.根向复位瓣术

答案

参考答案：D

单项选择题

下列关于等额本息还款法和等额本金还款法的说法，正确的是( )。

A．等额本会还款法优于等额本息还款法

B．等额本息还款法优于等额本金还款法

C．一般来说，经济尚未稳定而且是初次贷款购房的人更适合采用等额本金还款法

D．银行更倾向于采取等额本息还款法
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单项选择题

In one sense, we can trace all the problems of the American city back (91) a single starting point: we Americans don’t like our cities very much.
That is, on the (92) of it, absurd. After all, more than three-fourths of us now live in cities, and more are (93) to them every year. We are told that the problems of our cities are (94) more attention in Washington, and scholarship has discovered a whole new (95) in urban studies.
(96) , it is historically true: in the American psychology, the city has been a basically suspect institution, (97) with the corruption of Europe, totally lacking that sense of spaciousness and innocence of the (98) and the rural landscape.
I don’t pretend to be a scholar on the history of the city in American life. But my thirteen years in public (99) , first as an officer of the U. S. Department of Justice, then as Congressman, and now as Mayor of the biggest city in America have taught me (100) too well the fact that a p antiurban attitude (101) consistently through the mainstream of American thinking. Much of the (102) behind the settlement of America was in reaction (103) the conditions in European industrial centers and much of the theory (104) the basis of freedom in America was linked directly to the availability of land and the perfectibility of man outside the corrupt influences of the city.
What has this to do with the predicament of the modern city I think it has (105) to do with it. For the fact is that the United States (106) the federal government, which has historically established our national priorities, has simply never thought that the American city was "worthy" of (107) —at least not to the (108) of expending any basic resources on it.
Antipathy to the city predates the American experience. When industrialization (109) the European working man into the major cities of the continent, books and pamphlets appeared (110) the city as a source of crime, corruption, filth, disease, vice, licentiousness, subversion, and high prices.

A．appearance

B．outside

C．exterior

D．face
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