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问题 选择题

、“事物联系哲理”的课堂上。一位同学举例：在非洲东部的大草原上，生长着一种刺金合欢树。在它的周围，举腹蚁、天牛、介壳虫、长颈鹿形成一个复杂的关系网。为了不让长颈鹿等大型食草动物吃合欢树的叶子，一些美国生物学家在6棵树周围围起带栅栏。10年后，那些受保护的树日渐枯萎死亡，而没有受到保护任由长颈鹿啃吃的树却依然长势良好。以下判断正确的是

A．事例反映具体事物的联系不因人类活动而改变，切合课题

B．事例反映事物之间联系的普遍性和客观性，切合课题

C．事例反映任何两个事物之间都存在联系，切合课题

D．事例反映自在事物的联系优于人为事物的联系，切合课题

答案

答案：B

本小题考查的是联系。事物的联系是客观的，不以人的意志为转移，A与题意不符，任何两个事物之间都存在联系的说法是错误的，C不符合，自在事物的联系优于人为事物的联系的说法是错误的，D不符合题意，

单项选择题

True, some of the attacks against whites by blacks are for money and valuables. But, others ale revenge assaults by blacks for a real or imagined racial insult. It is equally true that the vast majority of violent crimes against whites are committed by whites, while the vast majority of violent crimes against blacks are committed by other blacks. Yet even after discounting crimes that are hastily and erroneously (错误地，不正确地) tagged as racially motivated, many blacks do attack whites because they all white. A 1998 Justice Department study confirmed that nearly 20% of the more than 4,000 hate crimes well committed against whites, and their attackers were blacks. The Southern Poverty Law Center also notes that there is a huge escalation in black-on- white violence from nearly none at the beginning of the 1990s.

A collection of white supermacists and rightist extremist groups have eagerly made black-on- white violence a wedge issue in their movement to paint blacks as the prime racial hate mongers in America. The New Century Foundation, an ultra-conservative think-tank, has launched a full- blown national campaign to alert whites to the danger of black hate crimes. These groups and individuals magnify hate crimes by blacks in order to back their social agenda. They oppose affirmative action programs and per hate crime laws. They downplay, or justify, the proliferation of white-supremacist-tinged paramilitary groups, police violence, and racial profiling. And they lobby hard for more prisons, police, and tougher laws.

Black-on-white violence also reinforces white fears of blacks as the ultimate menace to society. When blacks say or do nothing about these attacks, it is taken by some as a tacit signal that blacks put less value on white lives than black lives. This is a terrible price for black silence on hate crimes committed by blacks.

The best topic of this passage is ().

A. Black and White

B. Black-on-White Violence

C. Security Is an Illusion

D. White Supremacists and Rightist Extremist Groups
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单项选择题 A1/A2型题

观察细菌菌毛必须使用哪种显微镜？（）

A.相差显微镜

B.暗视野显微镜

C.电子显微镜

D.普通光学显微镜

E.荧光显微镜
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