注意缺陷多动障碍的病因是（） A.病因不明确 B.与受惊有关 C.与遗传有关

股票只有通过转让、出售才能变现。 ( )

用CH₄催化还原NO_x可以消除氮氧化物的污染。例如：

①CH₄(g)+4NO₂（g）=4NO(g)+CO₂（g）+2H₂O(g)   △H=-574kJ/mol

②CH₄(g)+4NO（g）=2N₂(g)+CO₂（g）+2H₂O(g)   △H=-1160kJ/mol

下列说法正确的是

A．若用标准状况下4.48LCH₄还原NO₂生成N₂和水蒸气，放出热量为173.4 kJ/mol

B．由反应①可推知CH₄(g)+4NO₂（g）=4NO(g)+CO₂（g）+2H₂O(l)△H﹥-574kJ/mol

C．反应②中当4.48LCH₄反应完全时转移的电子总数为1.60mol

D．反应①②转移的电子数相同

即相邻两次读振幅值间的时间或空间间隔是（），也叫做采样周期。

体表循行分布在腹部的阳经经脉是（）。

A.足少阳胆经

B.足阳明胃经

C.手阳明大肠经

D.手太阳小肠经

E.足太阳膀胱经

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.

5（）

A.Since

B.Before

C.At

D.For