正确答案: C
题目:马克思主义政治经济学的基础理论是
解析:C
举一反三的答案和解析:
64.答案:A
[考点] 各种肺炎的致病原因和病理过程
[分析] 肺炎球菌不产生毒素,不引起原发组织坏死或形成空洞,其致病力是由于含有高分子多糖体的荚膜对组织的侵袭,首先引起肺泡水肿,后出现细胞的渗出。而金黄色葡萄球菌肺炎、克雷白杆菌肺炎、流感嗜血杆菌肺炎和绿脓杆菌肺炎均可引起组织坏死,造成肺泡壁和其他结构损伤。
Even before Alan Greenspan’s admission that America’s red-hot economy is cooling, lots of working folks had already seen signs of the slowdown themselves. From car dealerships to Gap outlets, sales have been lagging for months as shoppers temper their spending. For retailers, who last year took in 24 percent of their revenue between Thanksgiving and Christmas, the cautious approach is coming at a crucial time. Already, experts say, holiday sales are off 7 percent from last year’s pace. But don’t sound any alarms just yet. Consumers seem only concerned, not panicked, and many say they remain optimistic about the economy’s long-term prospects, even as they do some modest belt-tightening. Consumers say they’re not in despair because, despite the dreadful headlines, their own fortunes still feel pretty good. Home prices are holding steady in most regions. In Manhattan, “there’s a new gold rush happening in the $4 million to $10 million range, predominantly fed by Wall Street bonuses,” says broker Barbara Corcoran. In San Francisco, prices are still rising even as frenzied overbidding quiets. “Instead of 20 to 30 offers, now maybe you only get two or three,” says john Deadly, a Bay Area real-estate broker. And most folks still feel pretty comfortable about their ability to find and keep a job. Many folks see silver linings to this slowdown. Potential home buyers would cheer for lower interest rates. Employers wouldn’t mind a little fewer bubbles in the job market. Many consumers seem to have been influenced by stock-market swings, which investors now view as a necessary ingredient to a sustained boom. Diners might see an upside, too. Getting a table at Manhattan’s hot new Alain Ducasse restaurant need to be impossible. Not anymore. For that, Greenspan & Co. may still be worth toasting. 第51题:By “Ellen Spero isn’t biting her nails just yet”(Line 1, Paragraph 1), the author means