单项选择题

Questions 28 to 30 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now, listen to the news.
According to the news item, efforts of environmental protection are especially affected by（）

A．lack of technology
B．rapid economic growth
C．unknown pollution sources
D．shortage of manpower

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单项选择题

Which of the following is NOT mentioned about the TV show（）

A．Performers have to be formally dressed on the show.
B．Each professional dancer dances with a celebrity.
C．People on the show perform a different dance every week.
D．The show runs for about four months.

单项选择题

Which of the following is NOT mentioned in the passage（）

A．Some people buy Christmas presents in the sales.
B．Some people shop online during the sales.
C．Some people buy presents for next Christmas.
D．Online retailers offer better post-Christmas sales.

Questions 28 to 30 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now, listen to the news. According to the news item, efforts of environmental protection are especially affected by（） 您的浏览器不支持 audio 元素。

Questions 28 to 30 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now, listen to the news.
According to the news item, efforts of environmental protection are especially affected by（）