听力音频：
Question 31-40
Complete the notes below.
Write ONE WORD ONLY for each answer.
Bittern conservation in the UK
Feature of Bitterns Male bitterns make special 31…………in spring to mate.
History of Bitterns 10th-15th century: Some people took bitterns as a kind of luxury 32………… 16th century: Bitterns were killed for house 33………… 18th century: Bitterns habitat was replaced by the areas for construction and 34…………
Current research findings Global warming contributes a lot to the 35…………to their habitat. Water mixed with salt affects their 36………… Bringing back a type of 37…………as food source in the reeds is important. Nowadays, bitterns breed in small nature 38………… Bitterns are facing various threats (e.g. pollution with dangerous 39…………)
Conclusion Conservation has saved many bitterns but 40…………still exist.
答案
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