曹操喜欢把他的手下比作古人，比如把荀彧称作“吾之子房”，把许褚称作“吾之樊哙”，典韦

根据课文内容，首字母填空：

     Yesterday Lisa and her (1) p______ went to see Peking Man at Zhoukoudian near Beijing. The

(2) b______ of Peking Man were (3) f______ there .

      Peking Man (4) l______ about 300,000 to 500,000 years ago. His head was like a (5) m______.

He was an ape-man. He lived in a big cave . He made things out of (6) s______. He used them to kill

animals for food. He (7) g______water from the river nearby. He made (8) f______ to cook and to

keep (9) w______ in winter .

     Lisa and her parents (10) s______ some (11) d______ on the cave wall . They also saw some small

art work (12) m______ by Peking Man. Lisa (13) r______ enjoyed (14) v______ Peking Man's home.

以下是土壤中有机污染物在需氧条件下无机化产生的最终产物，除了

A．氯化物

B．硝酸盐

C．二氧化碳

D．硫酸盐

E．甲烷

一般情况下，工程量计量以( )为准。

A．计划工程量

B．实体工程量

C．标准工程量

D．定额工程量

“蓬生麻中，不扶而直。”这句话反映了下列哪种因素对人的发展的影响( )

A．环境

B．遗传

C．教育

D．经济条件

维修工作计划应根据“信号设备维修工作内容及周期表”、“信号设备器材入所修更换周期及检修工时定额表”规定的内容和周期及（）作业计划编制。

A、行车作业

B、维修天窗

C、轨道调试

D、道岔施工