A、 They were controlled less strictly by the authorities.
B、 They treated their workers more humanely.
C、 They completely ignored consumers' health.
D、 They turned out more unhealthy products at will.

【正确答案】 A

【答案解析】解析：细节题。短文首句就提到，在过去，工业生产的自由度比现在大，不必像现在这样小心行事，A为正确答案。A只是对录音原文换了一种说法而已，符合“同义替换”的解题原则。本题反映了比较级常为考点这个命题规律。B、C与原文相悖。

A、 Paid much attention to the results of scientific discoveries.
B、 Seldom introduced safety laws before disasters occurred.
C、 Hardly ever looked into the causes of tragedies.
D、 Imposed safety rules as soon as accidents took place.

【正确答案】 B

【答案解析】解析：推断题。短文提到，然而这些新的制度来得太迟了，无法保护那些已经死亡或病重的人了。由此可推断，rules多在事发后才出台，故B正确。

A、 There are altogether three departments which protect customers and workers.
B、 A company with poor or dangerous working conditions is likely to be punished.
C、 Stores dealing in foods and drugs are controlled by the local government.
D、 The protection of workers' health and safety is still not well ensured.

【正确答案】 B

【答案解析】解析：推断题。短文末尾提到，另一个部门着眼于人们工作的地方，并会将那些违反工人健康安全法规的公司上报。由此可推断，B为正确答案。录音结尾处往往是考点所在。录音中举了3个例子，但这并不表明只有3个部门保护消费者及劳动者，故A错误；C与原文不符：D与原文相悖。

A、 Industries in the past and at present.
B、 Changes in the development of industries.
C、 The protection of industrial workers and customers.
D、 The freedom of industries today and in the past.

【正确答案】 C

【答案解析】解析：主旨题。短文通过对工业生产的过去和现状的比较，着重论述了关于保护消费者和工人的不同状况：过去很糟糕，现在改善了很多，故C正确。解答主旨题要从宏观角度去理解，抓住主题句和脉络。通过录音反复出现的safety、health、rules、work place、protect、customers、workers等关键词，不难推断出C正确。A、B、D在录音中都有提及，但它们只是某些细节而已，并不是短文的主要话题。