问题
选择题
—We didn't see him at the lecture.
—Neither did anybody else. He _______ it. [ ]
A. can't have attended
B. mustn't attend
C. may not have attended
D. couldn't attend
答案
答案：A
搜题请搜索小程序“爱下问搜题”
—We didn't see him at the lecture.
—Neither did anybody else. He _______ it. [ ]
A. can't have attended
B. mustn't attend
C. may not have attended
D. couldn't attend
答案：A
下表是我国某城市郊外四种农作物生产、运费与市场价格资料，分析后完成以下46～48题。
| 花卉 | 蔬菜 | 稻米 | 甘薯 | |
| 市场价格（元／千克） | 30 | 20 | 12 | 6 |
| 生产成本（元／千克） | 15 | 12 | 6 | 2 |
| 运费（元／千克·千米） | 3.0 | 2.0 | 0.5 | 0.2 |
| 单位面积产量（千克） | 20 | 15 | 4 | 10 |
A．珠江三角洲
B．黄土高原
C．华北平原
D．山东丘陵小题2:四种农作物中，单位面积产量利润最小的农作物是
A．花卉
B．蔬菜
C．稻米
D．甘薯小题3:假如上述四种农产品都提供给同一个消费市场，为了获得一定的经济效益，该城市郊外上述四种作物用地中，离该市场的最远距离不得超过
A．4千米
B．5千米
C．12千米
D．20千米