天疱疮破溃后的病理变化之一是( ) A．糜烂 B．棘细胞层内疱 C．基底层下疱 D

在中国，项目后评价不仅是( )的一项重要任务，也是建立和实施政府行政问责制的一个重要基础。

A．项目竣工咨询

B．工程咨询

C．项目投资咨询

D．工程决策咨询

Americans have taken over from the Indians many things besides their continent! Where did corn, potatoes, tomatoes, chocolate and maple sugar come from? The Indians. Who invented moccasins, snowshoes and hammocks? The Indians!

A list of the tools, plants, materials and designs we owe to the Indians would include hundreds of items. But there is something far more familiar, something that is always at hand. It is used daily by every American: a large vocabulary of Indian words.

Potato, tomato, chocolate, moccasin and hammock came into English from Indian languages. So did cocoa, tobacco, maize (an Indian word for corn) and succotash. Some words have changed on the way. Potato, for example, comes from a word that sounds like “batata”. Cocoa began as “cacahuatl”.

Some meanings have also changed. The long Indian word from which succotash comes means “something broken off in bits”. Indian women often varied their dishes by mixing bits of one food with another. White men who ate an Indian dish of mixed lima beans (青豆) and corn began using the Indian word to mean this particular mixture.

Put on your moccasins and take a walk in the country. If it is a cold day and you wear a mackinaw, your jacket will be as Indian as your shoes. But mackinaw came from “michilimackinac”, the Indian name of a place where a fort (集市) served as a trading post. Bright-colored blankets or jackets bought at the post soon became known as “mackinaws”.

Early white visitors to the continent found Indian words useful for the things new to them. But some Indian sounds, such as the “tl” at the end of many words, were hard to say. That is why “coyotl” became coyote and “tomatle” became tomato.

Some words simply seemed too long. So, “musickwautash” became succotash and “rockahominy” became hominy.

小题1:The first two paragraphs may serve as a(n)     .

A．explanation

B．introduction

C．comment

D．background小题2: Which of the following has been changed for easier pronunciation?

A．Batata

B．Chocolate

C．Tomatle

D．Rockahominy小题3: Some words have changed because       .

A．they are too long

B．nobody can use them

C．the things they refer to have disappeared

D．they are too difficult for people to write小题4: What is the passage mainly about?

A．How Indian traditions affect us.

B．Why Indian words were changed.

C．Things we owe to the Indians.

D．Indian words all around us.

患者，女，40岁。一个半月前左下6因深龋及髓致急性牙髓炎，进行根管治疗后，症状消失，树脂充填，并于两周前完成金属全冠修复。今来复诊，诉患牙修复后初时咀嚼有力，逐渐出现咬合痛。

此时应采取的措施是（）。

A.观察

B.调

C.冲洗龈 * *

D.拆除修复体重做

E.拔除患牙

索赔的特征不包括( )。

A．索赔是一种未经对方确认的单方行为
B．索赔是单方面行为，对对方形成约束力，不需要通过权力部门的确认才能实现
C．只有实际发生了经济损失或权利损害，一方才能向对方索赔
D．索赔是双向的，不仅承包人可以向发包人索赔，发包人同样也可以向承包人索赔

三相异步电动机的转差率是什么概念？