今天的句子：
Logistics UK said that almost 30% of its member firms were hunting in vain for drivers. Alex Veitch, the general manager for public policy, said at least 30,000 driving tests were postponed due to the pandemic and should be fast-tracked now. “This has left thousands of potential HGV(Heavy Goods Vehicle) drivers waiting in the wings when the UK needs them most.”
思考题：
Logistics firms were hunting for drivers in vain because___.
A.there are no longer driving tests in UK
B.the pandemic has demoted logistics
C.the number of HGV drivers is limited
D.driving tests have been fast-tracked
句子解析：
第一句：
Logistics UK said that almost 30% of its member firms were hunting in vain for drivers.
词汇：in vain 徒劳
logistics 物流协会
参考译文：英国物流协会表示，其近30%的会员企业都在招聘司机，却徒劳无功。
第二句：
Alex Veitch, the general manager for public policy, said at least 30,000 driving tests were postponed due to the pandemic and should be fast-tracked now.
参考译文：协会的公共政策总经理亚历克斯•韦奇表示，至少有3万场驾驶考试因疫情而被延期，应该加快考试的速度。
第三句：
“This has left thousands of potential HGV(Heavy Goods Vehicle) drivers waiting in the wings when the UK needs them most.”
参考译文：“这让成千上万的潜在重型货车司机在英国最需要他们的时候等在一旁。”
思考题解析：
Logistics firms were hunting for drivers in VAIN because___.
A. there are no longer driving tests in UK
（英国不再有驾驶考试了）
A选项错误。
B. the pandemic has demoted logistics
（疫情让物流业降级了）
不是找不到司机的原因！
B选项错误。
C. the number of HGV drivers is limited
（重型货车司机数量有限）
C选项正确。
对应最后一句！
很多潜在的重型货车的司机由于参加不了考试，只能在这里等着。
这就说明还是司机的数量有限。
D. driving tests have been fast-tracked
（驾驶考试已经被加快）
应该被加快，实际就是没有被加快。
D选项错误。
文章来源背景和来源：
Logistics firms warn of chilled food shortage over summer
物流公司警示，夏季将出现冷链食品短缺
Source: https://www.theguardian.com/uk-news/2021/jun/18/uk-faces-chilled-food-shortage-over-summer-logistics-industry-warns
背景：长期以来，英国的物流业就存在重型货车司机和生产工人招工难的情况，再加上英国退欧及新冠疫情的叠加影响，目前物流企业普遍出现了显著的人员短缺。物流协会发出警示，预期这个夏天将有许多商铺无法及时收到冷藏货物。英国退欧以后不明朗的政策走向导致许多外藉工人返乡，而疫情更是大幅减少了跨国务工流。企业们不得不争抢本国工人，许多岗位都没法招到拥有对应技能的人才。而对于货车司机这个必须执证上岗的工作来说，截止目前，不少于3万场驾驶考试被取消，更是加重了企业的招工难。
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