倘若成年早期社会心理危机解决不善，可能导致（） A.恐惧 B.自卑 C.不确定性 D

《中华人民共和国环境保护法》规定，特殊区域是指对于科学、文化、教育、历史、美学、旅游、经济和环境保护有着重要价值的区域。因此，对于该区域的环境保护有更高的要求，必须采取措施（　　）。

A. 节约资源

B. 合理利用能源

C. 维持环境稳定

D. 保护生态环境

(凡要求计算的项目，除特别说明外，均需列出计算过程；计算结果出现小数的，均保留小数点后两位小数，凡要求编制会计分录的，除题中有特殊要求外，只需写出一级科目。)
A公司于2007年1月1日从证券市场购入B公司2006年1月1日发行的债券，票面年利率是5%，5年期，按年计提利息，每年1月5日支付上年度的利息，到期日一次归还本金和最后一期的利息。A公司购入债券的面值为1000万元，实际支付的价款是1005.35万元，另外，支付相关费用10万元，A公司将其划分为持有至到期投资，实际利率为6%。
(2) 2009年1月6日，A公司出售该项债券投资的50%，售价为463万元，并将剩余部分重分类为可供出售金融资产。
(3) 2009年2月20日A公司以445万元的价格出售所持有的B公司的债券。(计算结果保留两位小数)
[要求]

根据《反间谍法》规定，关于公民和组织的义务的表述正确的是（）。

A.机关、团体和其他组织应当对本单位的人员进行维护国家安全的教育

B.机关、团体和其他组织可以对本单位的人员进行维护国家安全的教育

C.公民和组织应当为反间谍工作提供便利或者其他协助

D.公民和组织可以为反间谍工作提供便利或者其他协助

Disability among the elderly has declined markedly in the United States in the past two decades. In 1984, 25 percent of the elderly population reported difficulty with activities associated with independent living. By 1999, the share had fallen to 20 percent, a decline of one-fifth. Although these basic facts are well known, their interpretation is not clear. Is the reduction in disability a result of improved medical care, individual behavioral changes, environmental modifications that allow the elderly to better function by themselves, or other demographic changes Will the trend continue, or is it time limited What does the reduction in disability mean for years of healthy life and labor force participation

The researchers David Cutler, Mary Beth Landrum, and Kate Stewart focus on disability caused by cardiovascular disease to investigate the role of improved medical care on reductions in disability. By looking at just one condition, they can analyze health shocks and their outcomes in some detail. Cardiovascular disease is a natural condition to analyze, because it is the most common cause of death in the United States and most other developed countries. Also, more is spent on cardiovascular disease than on any other condition, clearly a case where medical care could really matter.

The researchers measure disability as the presence of impairments in. Activities of Daily Living (ADLs) and Instrumental Activities of Daily Living (IADLs). Their data source, the National Long-Term Care Survey(NLTCS) , includes information on six ADL measures: eating, getting in or out of bed, walking around inside, dressing, bathing, and getting to or using the toilet. There are also questions about eight IADL measures: doing light housework or laundry, preparing meals, shopping for groceries, getting around outside, managing money, taking medications, and making telephone calls. The NLTCS is a nationally representative longitudinal survey of the health and disability profile of the population aged 65 and over.

Cutler and his co-researchers find that reduced disability associated with cardiovascular disease accounts for a significant part of the total reduction in disability--between 14 and 22 percent. The evidence suggests that improvements in medical care, including both increased use of relevant procedures and pharmaceuticals, led to a significant part of this decline in disability. Regions with higher use experienced substantial reductions in mortality and disability.

While precise data on the implications of reduced disability are lacking, the possible impact of disability reductions is staggering. The researchers estimate that preventing disability after an acute cardiovascular event can add as much as 3.7 years of quality-adjusted life expectancy, or perhaps $ 316,000 of value. The cost of this outcome is significantly smaller. The initial treatment costs range from $ 8,610 to $ 16,332, depending on the procedure used. Further, recent cost analyses reported that annual Medicare spending was lower for the non-disabled than the disabled, which suggests that higher treatment costs may be offset by lower future spending among a more healthy population. By virtually any measure, therefore, the researchers conclude that medical technology after acute cardiovascular episodes is worth the cost.

We can learn from paragraph 3 that（）

A. ADLs and IADLs share the same measures

B. measures of IADLs seem to be more complex than those of ADLs

C. NLTCS provides information only for IADLs

D. NLTCS provides information only for ADLs

什么是热冲击？造成汽轮机热冲击的原因是什么？