联系实际论述公共政策直接主体的政策角色。

极低密度脂蛋白中含量最多的成分是（）

A.甘油三酯

B.胆固醇

C.载脂蛋白质

D.磷脂

E.游离脂肪酸

可用于水质消毒的是（）

A.75%乙醇

B.2%过氧乙酸

C.0.5%碘伏

D.10mg／L二溴海因

E.2%戊二醛

循行于人体后背正中线的经脉是

A．督脉

B．任脉

C．冲脉

D．带脉

(4~6题共用题干) 某患儿，1．5岁，其父母发现其瞳孔区发白1个月。眼部检查：视力检查不配合，左眼角膜清，前房深度正常，瞳孔大小正常，对光反射存在，晶状体呈灰白色混浊，眼底不能窥清。右眼前段末见明显异常，品状体末见明显混浊，眼压Tn。

如患儿为左眼白内障，以下哪种论述比较恰当

A．尽早行左眼白内障摘除，成人后植人人工晶状体

B．暂不考虑手术，7岁后行白内障摘除配合人工晶状体植入术

C．尽早行左眼晶状体切割术

D．尽早行左眼晶状体摘除术，术后积极治疗弱视，2周岁后可考虑植入人工晶状体

E．长大成人后行囊外白内障摘除术(ECCE)+10L

Weak dollar or no, $ 46,000-the price for a single year of undergraduate instruction amid the red brick of Harvard Yard-is (1) But nowadays cost is (2) barrier to entry at many of America’s best universities. Formidable financial-assistance policies have (3) fees or slashed them deeply for needy students. And last month Harvard announced a new plan designed to (4) the sticker-shock for undergraduates from middle and even upper-income families too.

Since then, other rich American universities have unveiled (5) initiatives. Yale, Harvard’s bitterest (6) , revealed its plans on January 14th. Students whose families make (7) than $60,000 a year will pay nothing at all. Families earning up to $ 200,000 a year will have to pay an average of 10% of their incomes. The university will (8) its financial- assistance budget by 43%, to over $ 80m.

Harvard will have a similar arrangement for families making up to $180,000. That makes the price of going to Harvard or Yale (9) to attending a state-run university for middle-and upper-income students. The universities will also not require any student to take out (10) to pay for their (11) , a policy introduced by Princeton in 2001 and by the University of Pennsylvania just after Harvard’s (12) . No applicant who gains admission, officials say, should feel (13) to go elsewhere because he or she can’t afford the fees.

None of that is quite as altruistic as it sounds. Harvard and Yale are, after all, now likely to lure more students away from previously (14) options, particularly state-run universities, (15) their already impressive admissions figures and reputations.

The schemes also provide a (16) for structuring university fees in which high prices for rich students help offset modest prices for poorer ones and families are less (17) on federal grants and government-backed loans.

Less wealthy private colleges whose fees are high will not be able to (18) Harvard or Yale easily. But America’s state-run universities, which have traditionally kept their fees low and stable, might well try a differentiated (19) scheme as they raise cash to compete academically with their private (20) . Indeed, the University of California system has already started to implement a sliding-fee scale.

18（）

A.beat

B.win

C.copy

D.follow