问题
判断题
PCB的化学名为“多氯联苯”，它是一种性能良好的绝缘液体，常用作电容器油；但PCB是一种严重的致癌物质，对环境的污染比较严重，世界各国已明文规定禁止使用（）
答案
参考答案：对
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PCB的化学名为“多氯联苯”，它是一种性能良好的绝缘液体，常用作电容器油；但PCB是一种严重的致癌物质，对环境的污染比较严重，世界各国已明文规定禁止使用（）
参考答案：对
| 阅读下面短文，从所给单词中选出适当的词，并用其正确的语言形式填在标有题号的空白处， 使语意通顺、完整。 | |
When I was going to give up my studying, a new teacher, Miss White came to our school. She was young, 2______ and knowledgeable (知识渊博的). One day, I was sitting alone in my 3______, Miss White came up to me and talked to me happily. Soon her smile away my unhappiness. "Do you think I can go to college?" I didn't 4______ why I asked such a question. I thought she must say "no". 5______ everyone else said so. But she said,"Dear, you can do 6______ you want. Just try, and you'll get closer to success. I believe you are the best!" I was touched 7______ by her words. I decided to study hard. From then on, we became good 8______. She often helped me with my study in her free time. In the end, I 9______ well in my studies and went to a good college. Miss White is an angel (天使). Her words have kept me going forward. She helped me to see that I am special and can be 10______ in life. |