肛裂血热肠燥证的治则（） A.清热利湿，凉血活血 B.清热润燥，通畅大便 C.清热解

下列依次在横线处填入的词语和句子，语意和衔接都最恰当的一项是[ ]

　　人的视觉接受神经系统对黑白特别___⑴___，这是因为构成人的视网膜边缘的一亿多个视杆细胞分辨黑白的本领特别强，即使___⑵___，也能___⑶___一个由明暗组成的黑白世界。可见，___⑷___，从而为黑白摄影被人的视觉接受及欣赏奠定了生理和心理基础。

①敏感

②敏锐

③在深夜感觉不到色彩

④在感觉不到色彩的深夜

⑤感受

⑥感知

⑦观众的视觉有优先唤起黑白的能力

⑧黑白有优先唤起观众视觉的能力

A．①④⑥⑧

B．②③⑤⑦

C．①③⑥⑦

D．②④⑤⑧

布查氏综合征诊断金标准（）。

A.超声

B.CT

C.血管造影

D.MR

E.核医学

地球公转是绕着太阳的运动，其周期长短是（）

A.一年

B.一月

C.一周

D.一日

公安机关对影响公安整体形象的个案报道要及时进行封锁，以防损害公安机关形象。

Some consumer researchers distinguish (1) "rational" motives and "emotional" (or "non-rational") motives. They use the term "rationality" (2) the traditional economic sense that assumes (3) consumers behave rationally when they carefully consider all alternatives (4) choose those that give them the greatest utility (i.e., satisfaction). (5) a marketing context, the term "rationality" implies that the consumer selects goods based (6) totally objective criteria, such (7) size, weight, price, and so on. "Emotional" motives imply the selection of goods (8) to personal or subjective criteria—the desire (9) individuality, pride, fear, affection or status.
The assumption underlying this distinction is (10) subjective or emotional criteria do not maximize utility or satisfaction. (11) , it is reasonable to assume that consumers always attempt to select alternatives that, (12) their view, serve to maximize satisfaction. Obviously, the assessment of satisfaction is a very personal process, based (13) the individual’s own needs as (14) as on past behavioral, social, and learning experiences. What may appear (15) irrational to an outside observer may be perfectly rational (16) the context of the consumer’s own psychological field. For example, a product purchased to enhance one’s self-image (such as a fragrance) is a perfectly rational form of consumer behavior. (17) behavior did not appear rational to the person who undertakes it (18) the time that it is undertaken, obviously he or she would not do it. (19) the distinction between rational and emotional motives does not appear to be warranted.
Some researchers go so far (20) to suggest that emphasis (21) "needs" obscures the rational, or conscious, nature of most consumer motivation. They claim that consumers act consciously (22) maximize their gains and minimize their losses; that they act not (23) subconscious drives but from rational preferences, (24) what they perceive to be (25) their own best interests.