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There is an ever-widening gap between black male college enrollees and their female and white counterparts, says the American Council on Education (ACE). Twenty years ago, according to ACE’s “Annual Status Report on Minorities in Higher Education,” 30 percent of African American male high school graduates (ages 18 to 24) were enrolled in college, compared with 28 percent of same-age black females and 41 percent of white males. Now, some 37 percent of black men are enrolled, compared with 42 percent of African American women and 44.5 percent of white males. So while there are more black males enrolling in college today than 20 years ago, other groups have outstripped them in enrolling and, even more importantly, in retention rates. The graduation rate of black men is lower than that of any group. Only 35 percent of black males enrollees graduated within six years from colleges in 1996, compared with 59 percent of white males,46 percent of Hispanic men,41 percent of American Indian males and 45 percent of the black women who entered the same year. Surveys and reports are hinting that the country’s educational apparatus is stacked against the black male. Fewer than one in five students of color have graduated from high school, have a set of college-prep courses on their high school transcripts and “demonstrate basic literacy” — the necessities for being “college ready.” Another glaring problem is that black males are disproportionately labeled as discipline and behavioral problems and fast tracked out of high schools through expulsions and suspensions. As if that’s not enough, says ACE’s William Harvey, there’s a virtual drying up of federal aid-to-education grant money coupled with jacked-up tuitions, which make it necessary for low-income students to assume an average $ 20,000 debt to finish a four-year curriculum. “For those in the lower economic category, the availability of financial aid determines who gets to go to college and who doesn’t,” observes Harvey. Harvey points out that, over the years, federal funding has undergone a “complete reversal,” from “a 70 percent to 30 percent grant-to-loan ratio 20 years ago” to the exact opposite today..”An 18-year-old male will be more inclined to say, I want money in my pocket now’ and attempt to get a job,” adds Harvey. “But many take on the debt, become part-time students, work 20-plus hours a week and become five-year students at a four-year college.” The inequity of that educational apparatus is especially clear when you look at the black males who persevere — those who go on to finish high school, earn a bachelor’s degree and even finish grad school. A recently released Census report shows that, whether they have a high school diploma or a master’s degree, black men will earn roughly 25 percent less than Whites.
下列维生素D活性最强的是
法国作家贝克特的现代荒诞剧《等待戈多》中的“戈多”指的是（）。
水泥是水硬性胶凝材料，所以在运输和储存中不怕受潮。
男，50岁，上腹间歇性隐痛10多年，近2个月疼痛加重，制酸药物不能缓解，食欲减退，消瘦。查体：贫血貌，右上腹有压痛。大便隐血试验（+）。用于确诊最可靠的检查方法是（）。
水泥用于改良软黏土的工程特性，不属于实现途径的是（）
被告人张某，女，21岁，某厂工人。 一天傍晚，张某路过吴某（男，26岁，无业）家门口时向吴某问路。吴某见张某单身一人，认为有机可乘，便以带路为名，将张某骗至防洪堤上，提出要与张某发生性关系。张某说：“不要这样，哪怕我叫你哥也行。”吴某说：“你叫我啥也不行，反正我要和你玩一下。”说着就去搂抱张某，张某向前跑开。吴某追上张某将其推倒在地，并抽了张某两巴掌，然后左手用力掐住张某的双手，右手撕扯张某的裙子和内裤。张某见状，知道武力反抗没有用，便以哀求的语气说：“我答应你就是了，别把衣服扯乱了，我还要去上班呢，我自己脱。”吴某以为张某害怕了，便放开张某。张某站起来将内裤脱下后，便要吴某脱光衣服。当吴某将外裤连同内裤一并褪到小腿肚时，张某突然上前将吴某推了一把，吴某站立不稳，滚下防洪堤，跌入河中。张某随即抓起内裤，顾不得穿上，便跑到附近的治安联防队报案。当联防队员赶至河边，将吴某找到时，吴某已溺水身亡。 试分析：张某的行为属于什么性质的行为？是否构成犯罪？为什么？
休克代偿期的血压变化是（）
社会保险登记事项包括：单位名称、住所、经营地点、单位类型、（）或者负责人、开户银行帐号以及国务院劳动保障行政部门规定的其他事项。
某总体含有n个个体，现测得n个个体某定量指标的数值，即可求得总体均数值与总体标准差，计算总体标准差时，其自由度应该是（）。
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