什么是误机？

华社华盛顿2012年２月13日电 应美国副总统拜登邀请，国家副 * * 习 * * １３日下午抵达华盛顿，开始对美国进行正式访问。请结合下图，完成下列问题。（7分）

（1）填出图中地理事物的名称：（3分）

河流A：        ，山脉B：           ，海洋C：          ；

城市D：        ，湖泊E：           ，海湾F：          。

（2）美国农业生产的特点是             ，位于湖泊E附近的农业带是      。（1分）

（3）美国高新技术产业中心是      ，位于          市附近。（1分）

（4）中新社2012年4月15日电 美国俄克拉荷马州由于强力龙卷风的袭击，该州西北伍德沃德市已确认有5人死亡，至少29人受伤。美国是世界上遭受龙卷风最严重的国家之一，根据美国地形综合分析，美国的龙卷风主要发生在    部地区，该地区地形主要为      。（1分）

（5）美国本土的土著居民是         ，    市是美国人口最多的城市。（1分）

对该疾病诊断的金标准是

A．肾上腺增强CT

B．肾血管彩超

C．肾血管造影

D．心脏超声

E．血浆肾素，血管紧张素，醛固酮测定

女，55岁，绝经5年，近3个月 * * 水样白带，近半个月出现 * * 间断少量流血，查宫颈光滑，宫体稍大且软，附件未扪及。刮宫时刮出较多量较脆内膜

为确诊应选用的检查为（）。

A. * * 后穹隆分泌物涂片查癌细胞

B.进行宫腔镜检查

C.进行碘试验和 * * 镜检查

D.进行B型超声检查

E.分段刮宫刮出物活组织检查

使用电动弯管机弯管时，当被弯曲管子的外径大于（）mm时，必须在管子内放置芯棒。

A、80

B、70

C、60

D、50

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.

6（）

A.described

B.prescribed

C.inscribed

D.instructed