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问题 选择题

某溶液中只含有Na+，Al3+，Cl-，SO42-四种离子，已知前三种离子的个数比为3∶2∶1，则溶液中Al3+和

SO42-的离子个数比为 [ ]

A．1:2

B．1:4

C．3:4

D．3:2

答案

答案：A

选择题

近几年来，我国把经济结构的调整作为改革和发展的主线，不断依靠科技进步推进产业结构优化升级，以期促进国民经济整体结构的合理发展。材料体现的哲学原理是        [ ]

①系统内部结构的有序性

②系统内部结构的优化取向

③要统筹考虑，优化组合，实现整体的最优目标

④要着眼于事物的整体性      

A、②④    

B、②③④    

C、①③    

D、①②③④
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单项选择题

German Chancellor Angela Merkel won over German voters in the Federal Election on Sept. 27. Can she now be won over by a French charm offensive (1) at repairing the relationship that was once at the heart of Europe That’s the question being asked in Paris, (2) top government officials are (3) talking about their desire to rekindle closer ties (4) their neighbors across the Rhine. (5) the end of World War II the Franco-German relationship has been the motor of European integration, the (6) force behind the creation of the European Union and, more recently, the introduction of the euro. But the ardor has (7) in this decade, particularly under Merkel, who has regularly struggled to (8) her irritation with French President Nicolas Sarkozy’s grandstanding. Sarkozy, (9) , has often been impatient with what he (10) Merkel’s lack of resolve.

The sometimes (11) personal rapport is a long way from the public shows of affection their predecessors staged, particularly Helmut Kohl and FranCois Mitterrand, who movingly held (12) in 1984 in a Verdun cemetery. There’s been tension on (13) , too. Charles Grant, director of the London-based think tank Centre for European Reform, points out that France and Germany have been (14) on issues from how best to reflate their economies during the economic (15) to the smartest strategies for dealing with Russia.

But influential movers in France are now (16) to put the relationship back on a friendlier footing. In a recent paper French think tank Institute Montaigne (17) an ambitious agenda for the two nations, (18) that a new impetus is needed if Europe’s voice is to be heard in a world (19) of big new players, such as Brazil and India, and at a time when President Obama seems fax more (20) with China and the rest of Asia than with America’s traditional allies in Europe.

2（）

A.which

B.that

C.where

D.when
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