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问题 单项选择题 A1型题

左侧继发性三叉神经痛，除出现左面部痛觉减退外，尚有的体征为（）

A.左角膜反射消失，下颌向右偏斜

B.左角膜反射存在，下颌向右偏斜

C.左角膜反射消失，下颌无偏斜

D.左角膜反射消失，下颌向左偏斜

E.左角膜反射存在，下颌向左偏斜

答案

参考答案：A

解析：继发性三叉神经痛常表现为三叉神经麻痹并持续性疼痛；有面部感觉减退、角膜反射迟钝等。由于疼痛处面肌痉挛，故而常表现为下颌偏向对侧来缓解疼痛。

单项选择题 A2型题

女性，18岁，发热咽痛鼻出血10天，胸骨压痛明显，右下肢皮肤可触3cm×3cm大小肿块，质硬。红细胞2×109/L，血红蛋白60g/L，白细胞2×109/L，血小板20×109/L，骨髓增生极度活跃，原始细胞0.80，部分胞浆中可见Auer小体，POX染色弱阳性，PAS染色胞浆淡红色，醋酸萘酚酯酶染色阳性，能被NaF抑制，诊断是（）

A.急性早幼粒细胞白血病

B.急性粒细胞白血病

C.急性单核细胞白血病

D.急性红白血病

E.急性淋巴细胞白血病
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单项选择题

Drug use is rising dramatically among the nation’ s youth after a decade of decline. From 1993 to 1994, marijuana use among young people (1) from 12 to 17 jumped 50 percent. One in five high school seniors (2) marijuana daily. Monitoring the Future, which (3) student drug use annually, reports that negative attitudes about drugs have declined for the fourth year in a row. (4) young people see great risk in using drugs. Mood-altering pharmaceutical drugs are (5) new popularity among young people. Ritalin, (6) as a diet pill in the 1970s and now used to (7) hyperactive children, has become a (8) drug on college campuses. A central nervous system (9) , Ritalin can cause strokes, hypertension, and seizures. Rohypnol, produced in Europe as a (10) tranquilizer, lowers inhibitions and suppresses short-term memory, which has led to some women being raped by men they are going out with. (11) taken with alcohol, its effects are greatly (12) . Rock singer Kurt Cobain collapsed from an (13) of Rohypnol and champagne a month before he committed (14) in 1994. In Florida and Texas, Rohypnol has become widely abused among teens, who see the drug as a less expensive (15) for marijuana and LSD. Alcohol and tobacco use is increasing among teenagers, (16) younger adolescents. Each year, more than one million teens become regular smokers, (17) they cannot legally purchase tobacco. By 12th grade, one in three students smokes. In 1995, one in five 14-year-olds reported smoking regularly, a 33 percent jump (18) 1991. Drinking among 14-year-olds climbed 50 percent from 1992 to 1994,and all teens reported substantial increases in (19) drinking. In 1995, one in five 10th graders reported having been drunk in the past 30 days. Two-thirds of high school seniors say they know a (20) with a drinking problem.

15（）

A.substitute

B.replacement

C.exchange

D.interchange
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