From the first two paragraphs, we learn that______.
A．aging brains tend to process more information simultaneously
B．one becomes forgetful when he gets old
C．older people don't think their brainpower is declining
D．the aged always stress long-term benefit

判断题证券市场线一般用于估计一种证券的预期收益率，而证券特征线则用于描述一种证券的实际收益率。()

未分类题From the first paragraph, we can learn that investors confidence in German economy is .A．weakB．increasingC．optimisticD．subtle

判断题资本市场线上的每一点都表示由市场证券组合和无风险借贷综合计算出的收益率与风险的集合。()

未分类题From the fifth paragraph, we can infer that______.A．Europe needs the extra economic growth from a transatlantic trade dealB．America is enjoying a moderate economic revivalC．Europe in any way won't cut their liaison with AmericaD．The transpacific pact is beneficial to both Europe and America

未分类题What is the authors attitude towards European reaction against American spying?