1行政机关对C厂家的被许可生产的2产品的质量进行检查时所需的费用：()A．应当由C厂

 配对阅读。左栏是5个人想做的事情，请从右栏为每个人选择最合适的一项，并将答案的字母编号填写在题前。

小题1: Carol is an assistant in a company. She is interested in English and wants to buy some newspapers to read so that she can improve it.

小题2: Mr Smith wants to travel to Africa. He wants to get some information about the climate and the culture in Africa.

小题3: Linda wants to know something about the inventions such as shoes with adjustable heels.

小题4: Helen hopes that she can give some help to the people who lost their home in the flood.

小题5: Lily doesn’t want to stay at home and read books all day during the winter holiday. She plans to take some lessons on singing.

（1）请在图甲中画出由空气斜射向水面MN的光线AO的大概传播路径；

（2）小明通过一平面镜看到了桌子下面的小球，请在图乙中画出平面镜的位置．

女，20岁，发热20天，体温最高39．3℃，上腹痛，间断腹泻，大便黄稀，四肢关节疼痛、红肿，局部皮下有硬结，尿常规发现红细胞（+），白细胞（+），尿蛋白（++）

该患者最适宜的治疗是（）。

A.口服抗生素

B.静脉滴注抗生素

C.口服糖皮质激素

D.中药治疗

E.抗结核治疗

按照《建筑基坑支护技术规程》（JGJ120-99），软土基坑必须分层均衡开挖，且每层的高度不宜超过（）m。

A．1

B．1.5

C．0.7

D．2

表达式x=operator-(y,z)其可以表示______为。