家居环境铅污染主要与下列哪种家用化学品有关（）。 A.化妆品 B.洗涤剂 C.涂料

男孩，3岁，郊县人。因发热3d，头痛，喷射状呕吐4次，神萎，嗜睡于1992年8月2日来诊。体检：体温39．8℃，神志清，神萎，入睡状，咽充血，颈有抵抗，心、肺无异常，腹壁、提睾反射未引出，膝发射亢进，克氏征、布氏征均阳性。

该病人最可能的诊断是（）

A.中毒型细菌性痢疾

B.化脓性脑膜炎

C.脑型疟疾

D.流行性乙型脑炎

E.钩端螺旋体病

治疗高度房室传导阻滞不宜用（）

A.洋地黄

B.普罗帕酮

C.胺碘酮

D.普鲁卡因酰胺

E.奎尼丁

表现为小细胞低色素性贫血的疾病主要有哪些?可各自通过何种方法进一步进行鉴别?

从图中可以分析出，该通讯公司高素质人才中，硕士所占的比例为（）

A．3%

B．30%

C．24%

D．43%

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. \