图示材料说明当时 A．中美关系已经实现正常化 B．中国奉行“一边倒”外交政策

男性，13岁，舌有时出现刺激痛近1年，检查见舌背有3块光滑的红色剥脱区，微凹陷，直径5～10mm，有2块已相连，剥脱区边缘被白色微高起的弧形或椭圆形所包绕，宽约1.5mm。可诊断为（）。

A.舌扁平苔藓

B.舌 * * 炎

C.萎缩性舌炎

D.地图舌

E.裂纹舌

阅读理解。

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     We can read of things that happened 5.000 years ago in the Near East, where people first learned to write.

   1   The only way that they can preserve their history is to recount it as sagas-  2   These legends are useful

because they can tell us something about migrations of people who lived long ago, but none could write down

what they did. Anthropologists(人类学家) wondered where the remote ancestors of the Polynesian peoples

now living in the Pacific Islands came from.    3       

     But the first people who were like ourselves lived so long ago that even their sagas, if they had any, are

forgotten.   4      

     Fortunately, however, ancient men made tools of stone, because this is easier to shape than other kinds. 

  5   Stone does not decay, and so the tools of long ago have remained when even the bones of the men who

made them have disappeared without trace.

A. They may also have used wood and skins, but these have rotted away.

B. descriptions of what important events happened in ancient times.

C. But there are some parts of the world where even now people can't write.

D. legends handed down from one generation of story-tellers to another.

E. So scientists have neither history nor legends to help them to find out where the first "modern men"

    came from.

F. But there is some doubt who began to write.

G. The sagas of these people explain that some of them came from Indonesia about 2,000 years ago.

上颌窦癌的分期（参考日本1971年所推荐），N₃的标准是（）

A.侵及同侧颌下淋巴结、活动>4cm

B.侵及对侧颌下淋巴结

C.侵及双侧颌下淋巴结

D.侵及颌下淋巴结

E.以上都不属于N₃

在办理国内贸易信保融资业务时，经营单位、卖方、信用保险机构应签订（）。

A.核心客户交易额度核定申请表

B.保理额度支用申请书

C.赔偿受益权转让协议

D.信用额度申请表

我国国防活动的基本原则有哪些？