五、词汇运用 （一）根据汉语或首字母提示用所学单词的正确形式完成下列句子。（每小题1分，共10分） 1. The manager said to the worker, “Get to work or ______________ (辞职) right now.” 2. The professor instructed his students to ______________ (服从) the experimental rules. 3. What is the chief cause of ______________ (离婚) between Jack and Mary? 4. Don’t play with the ______________ (锋利的) knife, as you might hurt yourself.[ 5. The cup isn’t made of ______________ (纯的) gold; it is mixed with other metals. 6. At night I like to look at the ______________ (遥远的) stars in the clear sky by myself. 7. You should have to ______________ (操作) the machine by winding this handle. 8. I hope this summer holiday will be ______________ (有益的)to your study. 9. He earns $ 2000 a month. That is to say, his a______________ income (收入) is $ 24000. 10. The warm-hearted woman is willing to d______________ some money to the poor child.