To help the environment, many Americans have made the change from paper and plastic bags to reusable grocery bags. But a report by a Florida newspaper says that reusable grocery bags sold by some supermarkets contain high levels of lead(铅). Lead is a metal that can be harmful to humans, especially young children. Now, Senator Charles Schumer is asking the US government to investigate(调查) the use of lead in reusable shopping bags.
“When our families go to the grocery store looking for safe and healthy foods to feed their kids, the last thing they should have to worry about is poisonous bags.” Schumer said, “A quick investigation will allow everyone to make informed, timely decisions.” Schumer added.
Lead in the bags is not likely to rub off on food. But over time, paint on the bags can chip and the bags can wear out. When this happens, lead can be released(释放).
The bags with the highest levels of lead had fancy designs and many pictures. Plain reusable bags without decoration were found to contain little lead. Consumers worried about lead levels in reusable bags can change to cloth or string bags. Paper bags are also a good choice, since paper can be recycled(回收).
Since 2007, Publix supermarkets have sold more than 13 million reusable bags. The store says because shoppers have made the change to reusable bags, it has saved more than 1 billion paper and plastics bags.
67. The shopping bags containing high levels of lead ________.
A. have been reported by a newspaper
B. have been stopped by the government
C. have stopped people from using reusable bags
D. have caused serious health damage to customers
68. From Schumer’s words we can learn that ________.
A. reusable bags do little harm to kids’ health
B. people have shown much concern for the reusable bags
C. people will be informed of the facts about the reusable bags
D. people should refuse to buy things from supermarkets
69. It can be inferred from the text that Publix might believe that the bags they sold are _____.
A. dependable B. convenient C. harmful D. popular
70. Customers are advised to choose bags ________.
A. with colorful designs B. with fancy pictures
C. made of plastic D. made of paper