利用随机变量期望的线性性质,我们可以计算以( )分配资金构造资产组合的总体期望收益率。
根据《水利建设工程文明工地创建管理办法》(水精[2014]3号),水利工程申报文明工地的条件之一是其工程项目已完成的工程量,至少应达全部建筑安装工程量的( )。
下列选项中属于《未成年人保护法》中社会保护的内容的是()。
Passage 2
Americans no longer expect public figures, whether in speech orin writing, to command the English language with skill and gift. Nor do theyaspire to such command themselves. In his latest book, Doing Our Own Thing: TheDegradation of Language and Music and Why We Should ,Like, Care, JohnMcWhorter, a linguist and controversialist of mixed liberal and conservativeviews ,sees the triumph of 1960s counter-culture as responsible for the declineof formal English.
Blaming the permissive 1960s is nothing new, but this is not yetanother criticism against the decline in education. Mr. McWhorter’s academicspeciality is language history and change, and he sees the gradualdisappearance of “whom”, for example, to be natural and no more regrettablethan the loss of the case-endings of Old English.
But the cult of the authentic and the personal ,“doing our ownthing”, has spelt the death of formal speech, writing, poetry and music. Whileeven the modestly educated sought an elevated tone when they put pen to paperbefore the 1960s, even the most well regarded writing since then has sought tocapture spoken English on the page. Equally, in poetry, the highly personal,performative genre is the only form that could claim real liveliness. In bothoral and written English, talking is triumphing over speaking, spontaneity overcraft.
Illustrated with an entertaining array of examples from both highand low culture, the trend that Mr. McWhorter documents is unmistakable. But itis less clear, to take the question of his subtitle ,why we should, like, care.As a linguist, he acknowledges that all varieties of human language, includingnon-standard ones like Black English, can be powerfully expressive-there existsno language or dialect in the world that cannot convey complex ideas. He is notarguing, as many do, that we can no longer think straight because we do nottalk proper.
Russians have a deep lovefor their own language and carry large chunks of memorized poetry in theirheads, while Italian politicians tend to elaborate speech that would seem old-fashionedto most English-speakers. Mr. McWhorteracknowledges that formal language is not strictly necessary, and proposes noradical education reforms-he is really grieving over the loss of somethingbeautiful more than useful. We now takeour English "on paper platesinstead of china". A shame, perhaps, but probably an inevitable one.
According to McWhorter, the decline of formal English_______.
替丁类代表药物西咪替丁的结构式如下。关于该类药物的构效关系和应用的说法,错误的是 ( )。

患者,女,15岁。水肿3个月余,下肢为甚,按之凹陷不易恢复,心悸,气促,腰部冷痛,尿少,四肢冷,舌质淡胖,苔白,脉沉,其证候是( )
湿毒浸淫
湿热壅盛
脾阳虚衰
水湿浸渍
肾气衰微