A endangered
B frightened
C killed
D angered
37 Why do researchers estimate elephant numbers in an area by counting dung piles?
A Because elephants are difficult to catch
B Because it is not possible to count elephants from a plane.
C Because it is not possible to keep track of elephants.
D Because elephants are shy animals
38 Piles of dung cant be relied upon when it comes to estimating elephant numbers because
A they are different in size
B they scatter an over the region.
C they are different in decay rate.
D they are different in quality.
39 According to Plumptre,the region over which a dung-pile census is carried out should be
A small enough
B well protected.
C carefully monitored.
D large enough
40 The first wordHein paragraph 6 refers to
A Andrew Plumptre
B Katy Payne.
C Anthony Chifu Nchanji.
D the writer of the article.
第三篇
More Than Just Money
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