听力音频：
Questions 31-40
Complete the notes below.
Write ONE WORD ONLY for each answer.
Canadian puffins
Originally, the number of puffins declined because people collected their 31…………
Future research The influence of spilled 32…………on the puffins. The unknown reasons for the decrease in the 33…………of puffin population in certain areas. Puffins’ habitat – they may like to live near 34…………
Findings The 35…………of puffin eggs is different. As puffins grow up, 36…………is common among the males. Puffins living in higher places feed their baby birds on a 37…………basis. 38…………may enter puffins’ nests by isolated island. A 39…………helps puffins fly faster. The 40…………of the nesting place influences puffins’ survival rates.
答案
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