单项选择题 Read the following analytical paragraphs, and decide which method is used to develop each paragraph. Fill in the black with A, B, C, D or E. A. classification B. compare and contrast C. process analysis D. cause and effect E. problem and solution 1. Eating in is often regarded as a good method of saving time, energy and money, but this may not necessarily be so. The cost of eating in, in terms of groceries needed for nutritious yet appealing meals, is on the rise; whereas, the cost of an economical, yet balanced meal out-on-the-town has risen very little over the past few years.

单项选择题 对建筑划分防烟分区时，关于防烟分区的面积说法错误的是（）

判断题 质粒在微生物细胞中是必需的结构。