将-些调控功能较强的税种和体现国家主权的收入作为中央政府收入，这体现了政府间财政收入

Lei Feng was a soldier who _____ the people and Chairman Mao used to speak highly of him. [ ]

A. devoted himself to serve

B. devoted himself to serving

C. was devoted to serve

D. devoted himself in serving

我国文学史上第一篇较系统而完整的文学创作专论是西晋（）的《文赋》。

Waston-Crick的DNA结构模型（）

A.每螺旋含11个碱基对的右手螺旋结构

B.碱基之间共价结合

C.A-U，C-G配对

D.DNA两多核苷酸单链反方向缠绕

E.碱基处于螺旋外侧

安全技术要素的考核分数为（）分。

A、60

B、70

C、80

D、90

在Word文档中，字体.字号按钮可以在（）找到。

A.菜单栏

B.标题栏

C.常用工具栏

D.格式工具栏