列宁是第一个社会主义国家的缔造者,他对社会主义建设道路的探索主要有 ①实行固定的

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列宁是第一个社会主义国家的缔造者,他对社会主义建设道路的探索主要有

①实行固定的粮食税  

②优先发展重工业  

③建立高度集中的经济政治体制 

④实行自由贸易,允许商品生产

A.①④

B.②③

C.②③④

D.①②③④

考点:赫鲁晓夫改革东欧剧变戈尔巴乔夫改革东欧社会主义国家的建立和发展
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下列叙述错误的是(  )

A.原子由原子核和电子构成

B.水的化学性质由水分子保持

C.干冰中的分子间有间隙

D.元素的化学性质由质子数决定

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常温下,向等体积、等物质的量浓度的盐酸、醋酸溶液中分别滴入0.1 mol·L-1 NaOH溶液,测得溶液的pH与NaOH溶液体积的关系如图所示。下列说法错误的是(  )

A.图中曲线①表示NaOH溶液滴定盐酸时的pH变化

B.酸溶液的体积均为10 mL

C.a点:c(CH3COOH)>c(CH3COO)

D.a点:c(H)+c(Na)=c(OH)+c(CH3COO)

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氢气有传导系数大、()、()等优点。

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President Bush arrived in Washington and forged ahead with an ambitious agenda- (1) tax cuts, vast changes in federal social programs, expansions of executive power and (2) broad remaking of energy and education policies.
Claiming a mandate by simply declaring (3) existence, his early successes dazzled his critics. With guru Karl Rove directing the (4) , Bush won a stunning series of political victories.
He muscled his agenda through (5) friendly Congress, and gained seats for his party in the 2002 midterm elections. (6) biggest triumph came in 2004, when he won a second term despite a (7) unpopular war.
The "permanent" Republican majority he and Rove envisioned even seemed attainable (8) Bush plunged himself into his most ambitious legislative effort yet: a partial privatization (9) Social Security.
But the president who boasted about "political capital" in the heady (10) after his re-election now faces the worst of political fates as he enters (11) final year in office: borderline irrelevance.
The president’s second term has (12) defined by legislative paralysis, marked by record-low approval ratings, presidential candidates who are (13) from his shadow, and a lingering war that’s sapping his remaining reservoirs of (14) .
As he enters his final year in office with the war continuing, Republican (15) for president bolting from his shadow, and his party back in the minority (16) Congress, he is politically weakened, an early entry into lame-duck status.
And the (17) Washington atmosphere he hoped to cure is just as nasty as it was (18) he came to office seven years ago.
"lie’s left our political institutions much (19) troubled than they were before," said Thomas E. Mann, a senior fellow at (20) Brookings Institution, a Washington-based think tank. "He didn’t create the ideological polarization, but he magnified it. \

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设教师表的结构为:(教师号、姓名、性别、职称、工资、所在系)。授课表的结构为:(教师号、课程号)。若要查询所有教师所讲授的课程,并列出教师号、姓名和课程号,应使用的SELECT语句是 ______。 A) SELECT教师表.教师号,姓名,课程号FROM教师表,授课表, WHERE教师表.教师号=教师号 B) SELECT教师表.教师号,姓名,课程号FROM教师表,授课表; ON教师表.教师号=授课表.教师号 C) SELECT教师表.教师号,姓名,课程号FROM教师表INNER JION授课表; ON教师表.教师号=授课表.教师号 D) SELECT教师表.教师号,姓名,课程号FROM教师表INNER JION授课表; WHERE教师表.教师号=授课表.教师号

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