47. What will “farmbots” be expected to do?
- A. Take up many of the farmers' routines.
- B. Provide medical treatments for livestock.
- C. Lead the trend in farming the world over.
- D. Improve the quality of pastures for grazing.
答案：A
答案句：Robots are currently under a two-year trial in Wales which will train “farmbots” to herd, monitor the health of livestock, and make sure there is enough pasture for them to graze on.
参考译文：机器人目前正在威尔士进行为期两年的试验，该试验将训练“农场机器人”来放牧、监测牲畜健康，并确保有足够的牧场供它们吃草。
定位线索：题干“What will 'farmbots' be expected to do?”→答案句“train 'farmbots' to herd, monitor the health of livestock, and make sure there is enough pasture”；文中“herd, monitor the health of livestock”对应选项A“Take up many of the farmers' routines”（承担农民的许多日常工作）。
解析：答案句列举了farmbots的预期任务：放牧、监测牲畜健康、确保牧场充足，这些都是农民日常工作的内容，因此选项A“承担农民的许多日常工作”是对原文的概括。选项B“为牲畜提供医疗”偷换概念，原文是“monitor”（监测）而非“provide medical treatments”；选项C“引领全球农业趋势”和D“改善牧场质量”在原文中未提及，属于无中生有。
48. What can robots do when equipped with high-tech sensors and complex learning algorithms?
- A. Help farmers choose the most efficient and safest passages.
- B. Help farmers simplify their farming tasks and management.
- C. Allow farmers to learn instantly what is occurring on the farm.
- D. Allow farmers to give them real-time instructions on what to do.
答案：C
答案句：The robots also learn the most efficient and safest passages, and allow engineers and farmers to analyze and better optimize the attributes and tasks of the robot, as well as provide a live stream giving real-time feedback on exactly what is happening on the farms.
参考译文：机器人还能学习最有效和最安全的路径，并让工程师和农民能够分析和更好地优化机器人的属性和任务，同时提供实时直播，准确反馈农场正在发生的事情。
定位线索：题干“What can robots do when equipped with high-tech sensors and complex learning algorithms?”→答案句“provide a live stream giving real-time feedback on exactly what is happening on the farms”；文中“real-time feedback”对应选项C“Allow farmers to learn instantly what is occurring on the farm”（让农民即时了解农场正在发生什么）。
解析：答案句明确指出机器人提供实时直播，让农民能实时了解农场情况，与选项C“让农民即时了解农场正在发生的事情”直接对应。选项A“帮助农民选择最有效和最安全的路径”偷换概念，原文是机器人自己学习路径，而非帮助农民选择；选项B“简化农业任务和管理”范围扩大，原文只提到优化机器人属性和任务；选项D“让农民给它们实时指令”与原文相反，原文是机器人提供反馈给农民。
50. What does the author think future farms will be like?
- A. More and more automated.
- B. More and more productive.
- C. Larger and larger in scale.
- D. Better and better in condition.
答案：A
答案句：Future farms will likely experience a greater deal of autonomy as robots take up more and more farm work efficiently.
参考译文：未来的农场可能会经历更大程度的自主性，因为机器人将越来越高效地承担更多的农活。
定位线索：题干“What does the author think future farms will be like?”→答案句“Future farms will likely experience a greater deal of autonomy”；文中“a greater deal of autonomy”对应选项A“More and more automated”（越来越自动化）。
解析：答案句指出未来农场将经历“a greater deal of autonomy”（更大程度的自主性），即自动化程度更高，与选项A“越来越自动化”直接对应。选项B“越来越高效”偷换概念，原文强调“autonomy”而非“productive”；选项C“规模越来越大”和D“条件越来越好”在原文中未提及，属于无中生有。