题目

Now I’d like to talk to you about your final exam. The exam will be held next Thursday, the last day of the exam week. Remember to bring two or three pens in case you run out of ink. And unlike the midterm exam, this test will not include multiple-choice questions; it will consist (由…组成) entirely of essays(文章). You’ll have to answer three of the five essay questions. The exam will be comprehensive(理解性的) , which means you’ll be responsible (负责) for all of the subject matters we covered in class this term. I would suggest you review your midterm exam as well下列做法错误的是（）A.为治理雾霾，禁止使用化石燃料B.变废为宝，将地沟油转化成航空燃料C.道路使用太阳能景观灯，节能又环保D.使用电动汽车，改善空气质量