单项选择题
1、 秋分日时，我国的天气状况是（　　）
A．北方大部分地区受“副热带高压”控制
B．长江中下游地区开始进入伏旱季节
C．全国大部分地区秋高气爽
D．快行冷锋南下，易造成寒潮灾害


2、通读下面的短文，回答题。
      Cats are creatures of habit． They like to go to sleep about the same time every day and for acertain length of time． They seem to have a natural clock inside them that tells them when to sleep．Cats increase their regular sleep with occasional cat naps (打盹" )． Some experts feel thathumans could also benefit from this habit． Cat naps help to build up energy in the body． They arealso a good way to get rid of trouble  Since cats have the same moods (情绪) as humans, some
     experts beheve that people can improve their moods． People might become happier．
      A number of famous people have copied cats by taking cat naps during the day． The naps would usually last from 15 to 30 minutes．
      Winston Churchill took cat naps． So did Presidents Harry Truman,John F． Kennedy and Lyndon B．Johnson． These famous men were known for their energy． They were also able to work long hours,often into the night． Napping was their secret．
     Perhaps more people learn from cats and take naps to feel better and live longer!
Taking cat naps_________．
A．will make a person lazy and tired
B．is a bad habit
C．will make people feel better
D．can help people become famous


3、通读下面的短文，回答题。
     Student participation (参与)in the classroom is not only accepted but also expected of thestudent in many courses． Some professors base part of the final grade on．the student' s oral participa-tion． Although there are formal lectures during which the student has a passive role (i． e． , listeningand taking notes), many courses are organized around classroom discussions, student questions, andinformal lectures． In graduate discussions the professor has a "manager" role and the students makepresentations and lead discussions． The students do the actual teaching in these discussions．
     A professor's teaching method is another factor(因素) that determines the degree and ,type ofstudent participation． Some professors prefer to control discussion while others prefer to guide theclass without controlling it． Many professors encourage students to question their ideas． Students whoobject to the professor' s point of view should be prepared to prove their positions．
      In the teaching of science and mathematics, the controlling mode of instruction is generally, tra-ditional, with teachers presenting formal lectures and students taking notes． However, new educationaltrends have turned up in the humanities and social sciences in the past twenty years． Students in edu-cation, society, and history classes, for example, are often required to solve problems in groups, designprojects, make presentations, and examine case studies． Since some college or university courses are"practical" rather than theoretical,they pay more attention to "doing" for themselves．
"Participation in the classroom is not only accepted but also expected of the student" in many courses except in_________．
A．science and mathematics
B．the humanities and social sciences
C．informal lecture courses
D．discussion courses


4、--Would you help me with these books?
--__________．
A．With pleasure
B．Never mind
C．It' s fine
D．Don' t worry


5、若函数f(x)=ax²+2ax(a>0)，则下列式子正确的是
A．f(-2)>f(1)
B．f(-2)C．f(-2)=f(1)
D．不能确定f(-2)和f(1)的大小


6、
A．diamond
B．object
C．observe
D．seldom


填空题
7、  


8、


9、


简答题
10、 设三个数a，b，c成等差数列，其和为6，又a，b，c+1成等比数列，求此三个数．

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