Ⅰ.单词拼写
根据汉语或首字母提示，写出下列单词
1．I tried to persuade him，but with no effect(效果)．
2．He recognized the painting as an early work(作品) of Degas.
3．We can feel the strong contrast of light and shade(阴影) in the drawing.
4．He devoted himself to working at the technological frontier(新领域)．
5．It's too dull(枯燥的) to listen to Professor Li's lessons.
6．The company is fortunate to have such highly skilled workers.
7．The children made a big noise，which was rather disturbing.
8．Basically, I agree with your suggestions, but there are still a few points I'd like to discuss with you.
9．How do you motivate the people to work hard and efficiently?
10．The subject we will discuss today is about the environment.
