问题 读图填空题

下图所示,甲图是酵母菌的呼吸作用图,乙图为某高等植物的光合、呼吸作用图。请据图回答下列问题。

(1)甲图中阴影部分表示________________,如果AB=BC,则A点酵母菌有氧呼吸与无氧呼吸消耗的葡萄糖之比为________________。

(2)如果把甲图中酵母菌换成小鼠,则在下图中画出小鼠呼吸作用单位时间释放的CO2量与氧气浓度之间的关系曲线。

(3)乙图中A点表示_____________,植物有机物积累量最大时对应的最低温度是_____________℃,光合作用制造的有机物是呼吸作用消耗有机物二倍的点是___________,图中光合作用单位时间内还原的CO2最大量为___________。

(4)除了温度外,还能影响图中曲线的因素有_______________。(至少写出两项)

答案

(1)无氧呼吸产生的CO2      1:3

(2)

(3)在此温度下,植物的光合作用等于呼吸作用/植物光合作用积累的有机物为0     10      C和E     60

(4)CO2浓度、光照强度、光质、矿质元素等

阅读理解

The United States will hold local, state and national elections this Tuesday. It seems that the Democrats (民主党) may be in a position to end Republican control of one or both houses of Congress.

Seventy percent of the fifty states will elect governors (地方长官). If the Democrats win four more of these than they have now, the Republicans would also lose their majority at the state level.

So both parties are fighting hard. Elections in America bring a flood of political advertising, especially on television. These messages are often negative (消极的) or attack ads.

Americans traditionally say they dislike negative ads, but political experts say these ads often work. In many cases, the candidates likely to gain from negative ads say that their own campaigns (活动) were not involved. Outside groups or national party committees often pay for these ads. Some are about issues, like a candidate’s position on the war in Iraq or immigration. But political ads increasingly seem to be attacking candidates personally.

Some political watchers say this year’s election has brought more negative ads than ever before. Whether this is true remains to be proven.

But some ads have made news, like a Republican National Committee ad against Harold Ford. The ad was based on the fact that last year he attended a Super Bowl party held by the men’s magazine Playboy. The ad showed an actress with bare shoulders saying she met him at the Play boy party. "Harold, call me," she says.

The ad might have seemed humorous, except that the woman is white and Mr. Ford is black.

63. The underlined word "some" in the fourth paragraph refers to ______.

A. campaigns        B. Ads       C. groups or party committees       D. candidates

64. About political ads, the author ______.

A. doesn’t show his own opinion

B. thinks they are negative

C. considers them fair

D. disagrees with them

65. The author mainly discusses ______.

A. American elections

B. the ads campaign behind American elections

C. negative ads in the US

D. political advertising on TV

单项选择题