利用黄金分割线分析市场行情时，4.236，( )，1.618等数字最为重要，价格极

用于疟疾病因性预防的首选药是（）

A．乙胺嘧啶 

B．卡青霉素 

C．特布他林 

D．红霉素 

E．甲硝唑

对于2SO₂＋O₂2SO₃的反应，下列叙述中正确的是（  ）

A．“高温”和“催化剂”的条件使SO₂和O₂产生了可发生性

B．“高温”和“催化剂”的条件可加快SO₃分解为SO₂和O₂

C．在该反应的平衡状态，SO₂、SO₂、O₂的浓度一定都相等

D．在该反应的平衡状态，正反应速率和逆反应速率相等

传染(感染)的含义是指

A．病原体侵入人体的结果

B．病原体侵入人体及环境因素的影响

C．病原微生物借助传播媒介作用于人体

D．宿主对病原微生物缺乏防御能力

E．病原体与人或动物机体相互作用与斗争的过程

How many people are suffering from labor market problems This is one of the most critical yet contentious social policy questions. In many ways, our social statistics exaggerate the degree of hardship. Unemployment does not have the same dire (可怕的) consequences today as it did in the 1930s when most of the unemployed were primary breadwinners, when income and earnings were usually much closer to the margin of subsistence, and when there were no countervailing social programs for those failing in the labor market. Increasing affluence, the rise of families with more than one wage earner, the growing predominance of secondary earners among the unemployed, and improved social welfare protection have unquestionably mitigated (减轻) the consequences of joblessness. Earnings and income data also overstate the dimensions of hardship. Among the millions with hourly earnings at or below the minimum wage level, the overwhelming majority is from multiple earners, relatively affluent families. Most of those counted by the poverty statistics are elderly or handicapped or have family responsibilities which keep them out of the labor force, so the poverty statistics are by no means an accurate indicator of labor market pathologies.
Yet there are also many ways our social statistics underestimate the degree of labor-market-related hardship. The unemployment counts exclude millions of fully employed workers whose wages are so low that their families remain in poverty. Low wages and repeated or prolonged unemployment frequently interact to undermine the capacity for self-support. Since the number experiencing joblessness at some time during the year is several times the number unemployed in any month, those who suffer as a result of forced idleness can equal or exceed average annual unemployment, even though only a minority of the jobless in any month really suffers. For every person counted in the monthly unemployment tallies, there is another part-time working because of the inability to find fulltime work, or else outside the labor force but wanting a job. Finally, income transfers in our country have always focused on the elderly, disabled, and dependent, neglecting the needs of the working poor, so that the dramatic expansion of cash and in kind transfers does not necessarily mean that those failings in the labor market are adequately protected.
As a result of such contradictory evidence, it is uncertain whether those suffering seriously as a result of labor market problems number in the hundreds of thousands or the tens of millions, and hence, whether high levels of joblessness can be tolerated or must be countered by job creation and economic stimulus. There is only one area of agreement in this debate—that the existing poverty, employment, and earnings statistics are inadequate for one of their primary applications, measuring the consequences of labor market problems.

Which of the following does "labor market problems" (Line 1, Para. 1) refer to

A．Shortage of Jobs providing adequate income.

B．Deficiencies in the training of the work force.

C．Trade relationships among producers of goods.

D．The overall causes of poverty.

工程项目主要利害关系者中，咨询部门的要求和期望是______。

A．投资少，收益高，质量合格
B．合理的报酬，及时支付工作报酬
C．优良的工作环境和物资资源
D．优厚的利润，迅速批准开工，及时提供服务