They provide a useful service, said Flack.
出自-2017年6月阅读原文
There are huge clusters of organic waste they can feed on, said Flack.
出自-2017年6月阅读原文
The birds can easily eat pieces of plastic or rubber hands and they can die, said Flack.
出自-2017年6月阅读原文
Flack said it was too early to know whether the benefits of plentiful food outweighed the risks of feeding on landfills.
出自-2017年6月阅读原文
Andrea Flack of the Max Planck Institute found that birds following traditional migration routes were more likely to die than German storks that flew only as far as northern Morocco, and spent the winter there on rubbish dumps.
出自-2017年6月阅读原文
"They provide a useful service," said Flack.
2017年6月六级真题（第三套）阅读 Section C
"The birds can easily eat pieces of plastic or rubber hands and they can die, " said Flack.
2017年6月六级真题（第三套）阅读 Section C