单项选择题
1、 （     ）
 


2、 不等式|2x一3|≥5的解集是
A．
B．
C．
D．


3、 我国棉花生产基地的正确分布是（　　）
A．河西走廊是长绒棉主产区
B．都分布在湿润、半湿润地区
C．黄河以北没有大的棉田分布
D．新疆是的产棉区


4、读图，如果N是北极点，请判断Q点的方位是在P点的（　　）

A．正东方向
B．正南方向
C．西南方向
D．东南方向


5、通读下面的短文，回答题。
      "It' s no use, Mum, "said Johnny． "I' m just no good at dancing． "
     "You' ve got to keep trying． Tonight will be 21 , dear． Try a turn with that pretty Lisette． "Johnny 22 ． Every Saturday night used to be the best of the week． He and his parents went
to the 23 at the Club, where his hero, Alcide, played the accordion(手风琴) with the band． Butlately everything had changed． Now that Johnny was older, he was  ,24   to dance with a girl!
      25 Johnny and his parents arrived at the Club, music had already started． Johnny got up his26   to approach Lisette． " May I have this dance?" Johnny asked． "That' s all right," saidLisette． Johnny struggled to keep up with Lisette' s 27 steps, but he was always one beat behindher． Then Johnny heard his friend Pierre say," Look! Johnny has two left feet!" Laughter burst fromthe crowd． Johnny 28 and ran outside, determined never to go to another dance．．
     The next Saturday,Alcide drove to Johnny' s house for some potatoes． He happened to hearJohnny playing the accordion． Alcide' s eyes 29 "Bring that accordion and play some songstonight,"Alcide said． Then he drove off,leaving Johnny staring open-mouthed 30 him．
     At the Club,Johnny scanned the crowd for Lisette and 31 her． The band played for a longtime before Alcide said," Dear friends, I got a 32 for you tonight． Young Johnny is going to joinus!" Trembling, Johnny stepped up on the platform, his eyes on the floor． He began to play, and theband joined in behind him． When the song ended,he heard cheers． Johnny kept playing until thedance was 33 ． "You did a fine job tonight． Play'with us again next Saturday night," Alcidesaid． "Yes, sir!" said Johnny． 34 he went outside, Johnny saw Lisette and her friends near thedoor． Lisette stepped forward, smiling, "You played really good tonight ! "she said．
      "Thank you,"Johnny blushed(脸红)． As he walked on,Pierre 35 moved out of the way
for him to pass．
      Johnny patted his accordion． Come to think of it, in his whole life, he had never once seen
Alcide out on the dance floor．
________
A．difficult
B．troublesome
C．different
D．Terrible


6、 光以45°的入射角从空气射入冰中，在冰中的折射角是30°．当光从冰射向空气时，产生全反射的临界角是（　　）
A．15°
B．30°
C．45°
D．75°


7、 __________ we shall raise ducks or geese remains to be decided.
A．If
B．Whether
C．What
D．That

8、 I don't mind __________ outside for a few more minutes if you haven't managed the report yet.
A．waiting; finishing
B．to wait; to finish
C．to wait; finishing
D．waiting; to finish


9、They kept on ______ till they got to the foot of the hill.
A．to run
B．running
C．runing
D．run


简答题
10、 已知曲线f1(x)=x³和曲线f2(x)=x²-(a+2)x+a-1的一个交点是坐标原点，求：
(I)曲线f2(x)的解析式及其顶点坐标；
(Ⅱ)在原点处两条曲线的切线方程．

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