关于冷库隔热材料的选用，冷库外墙、隔热内墙层阁楼层目前采用（）为主要隔热材料。A、泡
题型：单项选择题
问题：
关于冷库隔热材料的选用，冷库外墙、隔热内墙层阁楼层目前采用（）为主要隔热材料。
A、泡沫混凝士块
B、膨胀珍珠岩
C、沥青玻璃棉
D、松散稻壳
题型：单项选择题
| 看图完成对话。 |
| 1. A: Are you to maize (玉米) this year? B: No, I . I planted maize last year. A: What you going plant? B: I'm going plant tomatoes. |  |
| 2. A: Is the elephant to football? B: , it isn't. A: What's it going to do? B: It's to pay back (报复) the . |  |