第10题: [单项选择]污染物苯并芘对人体的影响是( )。 A. 引起呼吸器官疾病 B. 血液中毒、尘肺、肺感染 C. 致癌 D. 刺激眼、咽喉,呼吸机能减退 参考答案:C
第11题: [多项选择]Some people learn by reading about things. Others learn by doing things. Which of these methods of learning is better for you Use specific reasons and examples to support your choice. 参考答案:The essay is organized into an introduction, a body, and a conclusion. The three body paragraphs develop the three supporting points.
第15题: [单项选择]十进制整数64转换为二进制整数等于 A. 1100000 B. 1000000 C. 1000100 D. 1000010 参考答案:B 答案解析:[解析] 十进制整数转二进制的方法是除2取余法。“除2取余法”:将十进制数除以2得一商数和一余数。再用商除以2……以此类推。最后将所有余数从后往前排列。