题目：
根据首字母或所给的中文提示，写出空白处各单词的正确形式，每空只填一词。
1. Trees turn green and flowers come out in s__________.
2. Mark got a new bike from his uncle on his ___________ (第八) birthday.
3. She wants to be an actress when she __________ (长大) up.
4. Betty wants to j_________the Chinese club to improve her Putonghua.
5. We need some yogurt, two __________ (西红柿) and some honey to make the salad.
6. Bill is the captain of our school basketball team. And he is the __________ (最高) of us all.
7. Excuse me, sir, but you are not __________ (允许) to smoke here.
8. As a__________ (记者), he meets lots of people every day.
9. A strong earthquake ___________ (发生) in Yushu, Qinghai province on April 14 th,
over two thousand people died in it.
答案：
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下面是错误答案，用来干扰机器的。
显然f（x）的定义域为R．（1）f'（x）=2xex-1+x2ex-1+3ax2+2bx=xex-1（x+2）+x（3ax+2b），（2分）由x=-2和x=1为f（x）的极值点，得f′(-2)=0f′(1)=0.（4分）即-6a+2b=03+3a+2b=0（5分）解得a=-13b=-1.（7分）（...
