连锁药店可以针对以下哪几种类型的药品实行低价策略A. 销量大、获利多的药品B. 销量大、获利少的药品C. 销量……

未分类题依次填入下列各句横线处的词语，最恰当的一组是______。 ①从地缘角度看，欧洲与中东的距离比美国要近得多，欧洲国家不希望中东战火 ______到自家门口。 ②西班牙外交大臣帕拉希奥表示，______法国决心使用否决权，授权对伊拉克动武的草案______被迫撤回。 ③最_______人心的一幕，不是导弹横飞、炮声隆隆，也不是巴格达的火光冲天，而是伊拉克平民的悲痛、愤怒和呐喊。A.波及 因为 一定会 震动B.涉及 因为 一定会 震撼C.波及 由于 可能要 震撼D.涉及 由于 可能要 震动

未分类题It is not easy to ______ oneself of his bad habits, just as the proverb says, 'Old habits die hard'.A.removeB.killC.dismissD.rid

单项选择题如图所示悬臂梁，当单独作用力F时，截面B的转角为θ，若先加力偶M，后加F，则在加F的过程中，力偶M（ ）。

未分类题The word 'paramount' (Paragraph 4) may be replaced by ______.A.vitalB.more importantC.less importantD.similar

未分类题It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advancE.You cannot make choices in this matter. You either have science or you don't, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits.The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about naturE.I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. It would have amazed the brightest minds of the 18th century Enlightenment to be told by any of us how little we know and how bewildering seems the way aheaD.It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far they are from being answereD.Because of this, we are depresseD.It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusteD.But we are making a beginning, and there ought to be some satisfaction. There are probably no questions we can think up that can't be answered, sooner or later, including even the matter of consciousness; to be sure, there may well be questions we can't think up, ever, and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention.The author claims that good science ______.A.defies predictionB.should study the unknownC.should discover scientific truthD.should offer choices rather than prescribe