问题 单项选择题

诊断"多毛细胞"的最有效手段为()

A.细胞化学染色

B.染色体核型分析

C.骨髓象和血象综合分析

D.扫描电镜超微结构检查

E.骨髓组织病理检查

答案

参考答案:D

解析:多毛细胞白血病超微结构检查:扫描电镜(SEM)示毛细胞表面有较多的散射得细长毛状突出,最长可超过4μ,延伸的“毛”有交叉现象,部分细胞表面呈皱褶状突起。透射电镜(TEM)示毛细胞表面有长绒毛和伪足。

解答题
单项选择题

Are teens and young adults more narcissistic (自恋的) today than in the past That’s the view of a California researcher who studies (1) people.

In her new book, The Narcissism (2) : Living in the Age of Entitlement, psychologist Jean Twenge of San Diego State University and (3) W. Keith Campbell of the University of Georgia say research shows (4) young people today have "narcissistic traits" than in (5) generations. Such traits, Twenge says, include a very. (6) and inflated sense of self, which is (7) by a preoccupation with MySpace, Facebook and YouTube.

"We’ve been on this self-admiration cultural (8) for a long time," Twenge says. (9) Twenge’s take on today’s young people isn’t universal. Studies by other researchers, including Canadian (10) Dr. Kali of the University of Western Ontario, have used the same data but found (11) results. "They put a different (12) on it," Kali says.

Twenge’s studies have found more narcissistic traits and a (13) rate of increase among college students today, but Kali found that students’ narcissism was (14) greater in 2006 than in 1976. Twenge’s most recent paper studied the same data as Kali--more than 20 000 college students from 2002 to 2007. (15) researchers used the Narcissistic Personality Inventory to measure narcissistic (16) and findings by both have been (17) in peerreviewed journals.

Twenge’s book (18) just a month after The Mirror Effect : How Celebrity Narcissism Is Seducing America, a book co-written by behavioral (19) Drew Pinsky, (20) suggested that a celebrity-obsessed culture is causing more narcissism.

1()

A.old

B.changeable

C.young

D.depressed