问题 选择题

下图中的虚线为某水平自然带在图示地区分布的最北界线。读图回答下题。

与该自然带在我国分布的最北界线相比,图示界线

A.纬度较高,主要原因是该地受海洋和暖流影响大

B.纬度较高,主要原因是该地不受西北季风影响

C.纬度较低,主要原因是该地多山地、丘陵

D.纬度较低,主要原因是该地受寒流影响大

答案

答案:A

题目分析:

读图,图示区为日本的本州岛。分界线为亚热带季风气候区和温带季风气候区分界,自然带即亚热带常绿阔叶林与温带落叶阔叶林带的分界。因为日本的季风气候海洋性强,又有日本暖流的影响,亚热带季风气候分布的纬度较高,A对。日本是季风气候,冬季受西北季风影响,B对。分布的纬度比我国的高,C、D错。

填空题
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.

4()

A.More

B.Many

C.Fewer

D.Few