Passage Three Tom had once worked in a city office in London, but now he is out of work. He had a large family to support, so he often found himself in difficulty. He often visited Mr. White on Sundays, told him about his troubles, and asked for two or three pounds. Mr. White, a man with a kind hear(, found it difficult to refuse the money, though he himself was poor. Tom had already received more than thirty pounds from Mr. White, but he always seemed to be in need of some more. One day, after telling Mr. White a long story of his troubles, Tom asked for five pounds. Mr. White had heard this sort of thing before, but he listened patiently to the end. Then he said, "I understand your difficulties, Tom. I’ d like to help you. But I’ m not going to give you five pounds this time. I’ll lend you the money, and you can pay me off next time you see me." Tom took the money, but he never appeared again.
Tom was now in difficulties because he （）Passage Three Tom had once worked in a city office in London, but now he is out of work. He had a large family to support, so he often found himself in difficulty. He often visited Mr. White on Sundays, told him about his troubles, and asked for two or three pounds. Mr. White, a man with a kind hear(, found it difficult to refuse the money, though he himself was poor. Tom had already received more than thirty pounds from Mr. White, but he always seemed to be in need of some more. One day, after telling Mr. White a long story of his troubles, Tom asked for five pounds. Mr. White had heard this sort of thing before, but he listened patiently to the end. Then he said, "I understand your difficulties, Tom. I’ d like to help you. But I’ m not going to give you five pounds this time. I’ll lend you the money, and you can pay me off next time you see me." Tom took the money, but he never appeared again.
Altogether Tom received（）from Mr. White.Passage Four Dr. John Sterngold worked in the emergency room of a hospital in Willits, CA. The hospital was near a chrome-plating plant. The plant let off a dangerous gas called Chromium Ⅵ. Dr. Sterngold got very sick with asthma and had to quit working at the hospital. Many other citizens of Willits became ill with tumors, cancer, and asthma. Many scientists believe that the gases from the plant caused the illnesses, Thirty years ago Chromium Ⅵ was known to cause cancer. Twenty years ago scientists found there was no safe level of exposure to Chromium Ⅵ. But the company, Remco, was allowed to continue giving off the chemical until 1995. How could this happen Many chemicals are used in industry without knowing if they are dangerous. Sometimes, industry and business are more important than the health of the people.
One of the important issues in the story is （）我来回答:
