265.Anyone with the slightest(modest/least)knowledge(common sense)of…knows(can tell)that…
266.A little(careful/better)study comparison/understanding/appreciation)of…can/will help(promote/contribute to)…
267.Who is to say when/if…，or even to say…
268.It is almost(hardly)impossible(inconceivable)that…without … 269.Hardly(Scarcely anyone/Few people)…without…
270.You/One cannot without…
271.It doesn’t matter(makes no difference)whether/that…
272.No matter how…However
273.Whatever the causes/pressures/conditions，…
274.However great the demand(urgent the need/laudable the de-sire/praiseworthy the effort)to…，and however…
275.The more…;the more…;the more…
276…never(not/hardly)…let alone(much less/to say nothing of/ not to speak/mention of)…