国务院（）8月全面启动，重点包括保持经济平稳发展、推进供给侧结构性改革、促进创新驱动

下列关于不同动物结构和功能的叙述中，错误的是 [ ]

A．蝗虫的外骨骼是其适应陆地生活的重要特征    

B．鲫鱼身体呈梭形是其对水生生活的适应    

C．家鸽每呼吸一次，就在肺和气囊中各进行一次气体交换    

D．蚯蚓和沙蚕都是具有许多体节的环节动物

SPWM控制技术有（）控制和（）控制

阅读理解。

                                                              Submission Guidelines

     Before sending us a manuscript (稿件), look through recent issues (刊物) of the Post to get an idea of the

range and style of articles we publish. You will discover that our focus has broadened to include well-researche

d, timely and informative articles on finance, home improvement, travel, humor, and many other fields.

     The post's goal is to remain unique, with content that provides additional understandings on the ever-evolving

American scene.

     In addition to feature-length (专题长度的) article, the Post buys anecdotes, cartoons, and photos. Payment

ranges from $25 to $400.

     Our nonfiction needs include how-to, useful articles on gardening, pet care and training, financial planning,

and subjects of interest to a 45-plus, home-loving readership. For nonfiction articles, indicate any special

qualifications you have for writing about the subject, especially scientific material indicate one or two published

pieces with your article. We prefer typed articles between 1,000 and 2,000 words in length. We encourage you

to send both printed and online versions.

     We also welcome new fiction. A light, humorous touch is appreciated. We are always in need of straight

humor articles. Make us laugh, and we'll buy it. Feature articles average about 1,000 to 2,000 words. We like

positive, fresh angles to Post articles, and we ask that they be thoroughly researched.

     We normally respond to article submissions within six weeks. You are free to submit the article elsewhere

at the same time.

     Please submit all articles to Features Editor, the Saturday Evening post, 1100 Waterway Boulevard,

Indianapolis, IN 46202, (317) 634-1100.

1. Before sending a manuscript to the post, a contributor is advised to _____.

A. get a better understanding of American issues

B. find out the range of the articles in the Post

C. increase his knowledge in many fields

D. broaden his research focus

2. To submit nonfiction articles,a contributor must _____.

A. provide his special qualification

B. be a regular reader of the Post

C. produce printed version

D. be over 45 year old

3. From the passage we can learn that the Post _____.

A. allows article submission within six weeks

B. favor science articles within 2,000 words

C. have a huge demand for humorous works

D. prefers nonfiction to fiction article

下述疾病中发生呼吸衰竭时，吸氧后氧分压改善明显，最可能的情况是（）

A.COPD

B.左心衰竭

C.ARDS

D.大叶性肺炎

E.肺不张

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.

7（）

A.treat

B.cure

C.diagnose

D.test