6．v
7．A 见第二段。题目中administer一词意为“用药”，subject一词为“实验对象”之意。
8．B 见第四段“… to raise levels of HDLs, which ferry cholesterol out of artery-clogging plaques to the liver for removal from the body.”即HDLs的作用最终是将choleserol清除出人体：“… for removal from the body”。
9．B 见第四段“But HDLs are complex and not entirely understood.”
10．C 见第二段“… plus a cholesterol-lowering statin”，即statin是可以降低cholesterol的。
11．D 见第六段“So inhibiting CETP, … might actually cause an abnormal and irreversible accumulation of cholesterol in the body.
12．A 见第三段。
13．C 见第四段“Statins, in contrast, mainly work by lowering the 'bad' low-density lipoproteins.” |
