若曲线y＝ax2－ln x在点(1，a)处的切线平行于x轴，则a＝________.
因为y′＝2ax－，
依题意得y′|x＝1＝2a－1＝0，所以a＝.
用所给词的适当形式填空。
1. Mr. Dean ________ (drive) his new car on the street.
2. Many students enjoy ________(listen) to the music after school.
3. Most of us don't agree with ________(he).
4. Let's ________(drink) some orange juice.
5. There ________ ( not be) any water in the bowl.
试分析新感觉派小说的审美特色？
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