听力音频：
Questions 21-25 Complete the notes below.
Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
In Southeast Mexico, farmers did too much 21 _______ so that the environment has been destroyed.
According to Dick, vegetation problems caused 22 _______
A back issue of a periodical reported an interview with 23 _______
According to one of the articles in the periodical, land 24 _______ show it is very tough for plant growth there.
In the past ten years, almost 25 _______ square kilometers of the forest has disappeared.
Questions 26-30 Complete the sentences below.
Write ONE WORD AND/OR A NUMBER for each answer.
26 “Growing Area” is about _______ square kilometers.
27 Scientists have taken of _______ the soil in the Yucatan.
28 The university’s own Geology Department has also analysed _______ the at the site.
29 The _______ in Dr Horst’s book are very useful and worth studying.
30 The student needs a _______ to do the presentation.
答案
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