问题 选择题

“从雪山走来,春潮是你的风采。你向    海奔去,惊涛是你的气概。你用甘甜的乳汁,哺育各族儿女,你用健美的臂膀,挽起高山大海。”(选自《长江之歌》)回答问题。

小题1:《长江之歌》中的“雪山”是指

A.巴颜喀拉山

B.唐古拉山

C.秦岭

D.南岭小题2:长江水能资源主要集中在

A.上游河段

B.中游河段

C.下游河段

D.长江三角洲小题3:“从雪山走来,春潮是你的风采。你向   海奔去……”歌词中有一个字不太清楚,你能帮他填上去吗?

A.南海

B.东海

C.黄海

D.渤海小题4:“万里长江,险在荆江”的主要原因是

A.支流多

B.流域广

C.无湖泊调节洪水

D.河道特别弯曲

答案

小题1:B

小题2:A

小题3:B

小题4:D

题目分析:

小题1:《长江之歌》中的“雪山”是指长江的发源地——青藏高原的唐古拉山.

小题2:长江水能资源主要集中在上游河段及阶梯交界处,落差大。

小题3:长江发源于青藏高原,注入东海。

小题4:“万里长江,险在荆江”的主要原因是河道特别弯曲,水流湍急,易发生洪涝灾害。

点评:本题还可以考查长江水文特征、航运价值、主要生态环境问题、上中下游的分界点、支流与沿江湖泊等知识。

单项选择题
单项选择题

Who is poor in America This is a hard question to answer. Despite poverty’s messiness, we’ve measured progress against it by a single statistic: the federal poverty line. In 2008, the poverty threshold was $ 21,834 for a four-member family with two children under 18. By 1his measure, we haven’t made much progress. Except for recessions, when the poverty rate can rise to 15 percent, it’s stayed in a narrow range for decades. In 2007—the peak of the last business cycle—the poverty rate was 12.5 percent; one out of eight Americans was "poor. " In 1969, another business-cycle peak, the poverty rate was 12.1 percent. But the apparent lack of progress is misleading for two reasons.

First, it ignores immigration. Many immigrants are poor and low skilled. They add to the poor. From 1989 to 2007, about three quarters of the increase in the poverty population occurred among Hispanics—mostly immigrants, their children, and grandchildren. The poverty rate for blacks fell during this period, though it was still much too high (24.5 percent in 2007). Poverty "experts" don’t dwell on immigration, because it implies that more restrictive policies might reduce U.S. poverty.

Second, the poor’s material well-being has improved. The official poverty measure obscures this by counting only pretax cash income and ignoring other sources of support. These include the earned-income tax credit (a rebate to low-income workers), food stamps, health insurance (Medicaid), and housing subsidies. Although many poor live hand to mouth, they’ve participated in rising living standards. In 2005, 91 percent had microwaves, 79 percent air-conditioning, and 48 percent cell phones.

The existing poverty line could be improved by adding some income sources and subtracting some expenses (example: child care). Unfortunately, the administration’s proposal for a "supplemental poverty measure" in 2011—to complement, not replace, the existing poverty line—goes beyond that. The new poverty number would compound public confusion. It also raises questions about whether the statistic is tailored to favor a political agenda.

The "supplemental measure" ties the poverty threshold to what the poorest third of Americans spend on food, housing, clothing, and utilities. The actual threshold not yet calculated—will probably be higher than today’s poverty line. Moreover, this definition has strange consequences. Suppose that all Americans doubled their income tomorrow, and suppose that their spending on food, clothing, housing, and utilities also doubled. That would seem to signify less poverty—but not by the new poverty measure. It wouldn’t decline, because the poverty threshold would go up as spending went up. Many Americans would find this weird., people get richer, but "poverty" stays stuck.

What produces this outcome is a different view of poverty. The present concept is an absolute one: the poverty threshold reflects the amount estimated to meet basic needs. By contrast, the new measure embraces a relative notion of poverty: people are automatically poor if they’re a given distance from the top, even if their incomes are increasing.

Poverty experts are reluctant to talk about immigration because()

A. they may be immigrants or children of immigrants

B. they don’t admit that blacks have improved their life

C. poverty has been reduced through restrictive policies

D. they may be taken as opponents to free immigration policies