微型计算机系统中，下面与CPU概念最不等价的是A．中央处理器 B．微处理器 C．主机

语法填空（共10小题；每小题1.5分，满分15分）

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Bosses of ___31___ publishing firm are trying to work out why no one noticed that one of their ___32___ (employ) had been sitting dead at his desk for five days before anyone asked if he was feeling okay. George Turklebaum ___33___ had been employed as a proofreader at a New York firm for 30 years, had a heart attack in the open-plan office, ___34___ he shared with 23 other workers.

He ___35___ (quiet) passed away on Monday, but nobody noticed ___36___ Saturday morning when an office cleaner asked why he was working during the weekend. His boss, Elliot Wachiaski, said, “George was always the first guy in each morning and the last ___37____ (leave) at night, so no one found ___38____ unusual that he was in the same position all that time and ___39____ (keep) much to himself.”

A postmortem examination (尸检) revealed that he had been dead ___40____ five days after suffering from coronary disease (冠状动脉疾病). George was proofreading manuscripts (手稿) of medical textbooks when he died.

氯酸钾和二氧化锰的混合物共A克，加热完全反应后得到B克氧气和C克氯化钾，则混合物中二氧化锰的质量为[ ]

A.（A+B-C）克

B.（A-B-C）克

C.（A+B+C）克

D.（A+C）克

甲状腺动脉有几条或几对，起源于哪两根血管分支()

A．2条；颈内动脉分支和锁骨下动脉分支

B．2对；颈内动脉分支和锁骨下动脉分支

C．4条；颈外动脉分支和锁骨下动脉分支

D．4对；颈外动脉分支和锁骨下动脉分支

E．5对；颈内动脉分支和颈外动脉分支

基本选择符不包括（）。

A.标记

B.类

C.标识

D.便签

如图中，一个质量均匀的球放在互成120°的两块光滑平面上，保持静止，OA是水平的．关于球的受力分析，下面说法中正确的是（）

A.球受重力、平面OA和OB的弹力

B.球除了受重力外，只受到平面OA的弹力

C.平面OA对球的弹力，方向向上偏左

D.平面OB对球的弹力，方向水平向右