武汉的四大佛教丛林是指（） A.归元寺 B.宝通寺 C.古德寺 D.莲溪寺

The organizers of tomorrow’s outdoor concert announced that it will go on tomorrow on schedule unless bad weather is forecast or too few advance tickets are sold. If the concert is canceled, refunds will be made to ticket holders. Since some ticket holders have already been issued refunds even though more than enough advance tickets were sold, it must be the case that bad weather is forecast.
Which of the following is an error of reasoning contained in the argument

A．It proceeds as if a condition, which by itself is enough to guarantee a certain result, is the only condition under which that result would occur.

B．It bases a conclusion that is known to require two conditions on evidence that bears on only one of those conditions.

C．It explains one event as being caused by another event, even though both events must actually have been caused by some third, unidentified event.

D．It treats evidence for the absence of one condition under which a circumstance would occur as conclusive evidence that that circumstance will not occur.

E．(E) Evidence given to support the conclusion actually undermines it.

关于 * * 鳞状上皮癌治疗，正确的是

A．手术治疗主要适用于Ⅱ期以早的病例

B．手术治疗主要适用于晚期的病例

C．放疗不敏感，一般不采用放疗

D．放疗较敏感，适用于绝大多数各期患者

E．化疗有一定疗效，可作为综合治疗的一种手段

一个袋中装有2个红球和3个白球，现从袋中任意取出一球，记录下颜色后放回袋中，再任意取出一球，记录下颜色，则取出的两球为不同颜色的概率为______．

从单桩钻孔速度的角度考虑，钻孔桩施工机械宜选用( )。

A．冲击钻

B．冲抓钻

C．正循环回转钻机

D．反循环回转钻机

现有以下几种措施：①对燃烧煤时产生的尾气进行除硫处理，②少用原煤做燃料，③燃煤时鼓入足量空气，④开发清洁能源。其中能减少酸雨产生的措施的是[ ]

A．①②③ 　　　　

B．②③④ 　　　　

C．①②④ 　　　　

D．①③④