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Text 2 When Europe caught America's flu after 2008,bond markets picked off the euro's weakest members one by one.Greece,Portugal,Ireland and Spain were forced into bail-outs.Italy,the euro's third largest economy,tottered.Emergency funds were created,and the European Central Bank（ECB）implied it would create unlimited quantities of cash if needed,and the euro limped on.Today,growth is picking up and unemployment falling.But no one believes that the euro,which lacks the political and fiscal institutions typical of a currency area,can remain half-built forever.Investors are uncertain of its future,and governments have piled on debt since the last crisis,shrinking the space available to respond to the next one.The case for reform is much-talked about.The creation of the euro in 1999 denied its members the option of restoring competitiveness by devaluing.Labour-market mobility and fiscal transfers,which smooth the effects of shocks in other currency areas,were limited by rules and by culture.Bail-outs and belt-tightening were the prescribed solution for governments hit by sudden capital stops,which annoyed everyone:creditors resented opening their wallets;debtors contracted an acute case of austerity fatigue.The currency turned from an instrument of convergence between countries to a wedge driving them apart.Just compare Germany's unemployment rate with Greece's.All this created a legacy of mistrust that haunts the euro zone today.That helps explain why,despite this endless talk of troubles,conversations about euro-zone reform have gone nowhere.Indebted countries like Italy have grown addicted to the ECB's cheap money,ignoring pleas from Mario Draghi,the bank's president,to use the time he has bought them to reinvent their economies.Hardliners like Germany are more convinced than ever of the need for strict rules on spending and structural reform.Anxious officials wonder where the political impetus for a debate on the euro's future might come from.If the euro area is capable of taking advantage of good conditions,best to build confidence slowly.Start with the incomplete banking union,which still lacks a common deposit-insurance scheme（thanks to German objections）,and a backstop for its resolution fund.The much-celebrated capital-markets union,which aims to reduce European firmsJ reliance on banks for finance,is only getting off the ground.Improving cross-border financial flows matters as much as the more contentious fiscal risk-sharing.In time,that might open the way to more radical changes.They will require the sort of political courage for which the euro zone has never been known,but it could turn out to be less painful than some suspect:polls find record support for the single currency among voters,and a surprising appetite for reform.Like self-hating addicts,governments have shivered in the euro zone's halfway house for too long,hooked up to Mr Draghi's monetary medicine and convincing themselves that they deserve no better.It is time to move on.
It can be learned from the first paragraph that_____.

A.the 2008 global financial crisis originated in Europe
B.euro-zone economy is still in the midst of recession
C.the ECB has helped euro's weak members step out of trouble
D.the euro is ill-prepared to respond to another crisis

笔为剑的一名优秀的学生在统计考试中表现得很糟糕，根据韦纳的归因理论，笔为剑该如何去安慰这个学生才更为有效？

心包积液时搏出量减少的原因主要是
A.心肌收缩力下降 B.心室舒张末期容积减小C.心室射血期缩短 D.等容舒张期缩短