甲与乙矛盾很深，一日，甲见乙手握一支手枪朝自己走来，便随手操起桌子上的水果刀刺向乙，

下列问题中，两个变量间的函数关系式是反比例函数的是( B   )

A．小颖每分钟可以制作2朵花，x分钟可以制作y朵花

B．体积为10cm3的长方体，高为hcm，底面积为Scm2

C．用一根长50cm的铁丝弯成一个矩形，一边长为xcm，面积为Scm2

D．汽车油箱中共有油50升，设平均每天用油5升，x天后油箱中剩下的油量为y升

Geneva is situated between the Jura Range and the Alps on the western end of Lake Geneva. Capital of Peace is one of its names— the European headquarters of the United Nations lies here in Palais des Nations. Another worthy name for this city with a humanitarian tradition（人道主义传统）and international character is the World’s Smallest Metropolis. Parks, splendid stores and lively streets in the old part of town and its 2000-year history wait to be discovered.

The Jet d’Eau together with the Flower Watch are the main attractions every year for the tourists visiting Geneva. The Jet d’Eau has become the symbol（象征）of Geneva for a long time. This is a 140 meters high water monument with a rich history. Eight 13,500-watt projectors light the grand column（圆柱）of the fountain in the evening, from early March until the second Sunday of October. The Flower Watch, which was created at the edge of the English Garden in 1955, reminds us about that Geneva is the birthplace of the Swiss clock and watch making, and that this industry has become internationally famous, as well through the quality of the watches as through their beautiful appearance.

Sails on Lake Geneva are also enjoyable. The Lake of Geneva, lying among the Alps, is a true inland sea, making possible a wide range of pleasant boat trips, you can relax and watch the beautiful scenes pass by.

56. Which of the following is NOT suitable for describing Geneva?

A. Capital of Peace.              B. Palais des Nations.

C. The World’s Smallest Metropolis.

D. The birthplace of the Swiss clock and watch making.

57. The Jet d’Eau in the second paragraph refers to       .

A. the water fountain            B. the English Garden

C. a new scene with electric lighting     D. the name of a famous watchmaker

58. What do we learn about the Lake of Geneva from the text?

A. It is the symbol of Geneva.

B. It lies among the Jura Range.

C. It has a direct passage to the ocean.

D. It is a large body of water of tourist interest.

企业在核算废品损失时，一般是指______

A．辅助生产车间的废品损失
B．基本生产车间的废品损失
C．基本生产车间和辅助生产车间的废品损失
D．产品销售后发生的废品损失

气相色谱法测定环境空气和废气中有机磷农药时，每次采样时应做一个过程空白。每分析一批样品，必须测定一次吸附管前后XAD-2的空白。

茨温利