听力音频：
Questions 31-35
Choose the correct answer, A, B or C.
31 The student thought there were no crocodiles in Northern Africa because
A North Africa contains very little wildlife for the crocodile to prey on.
B she found no mention in the literature of their existence there.
C there is very little water in North Africa.
32 Normally crocodiles live in groups of about.
A 20.
B 38.
C 46.
33 Some African crocodiles usually live in areas with
A hot, dry climates.
B hot, wet rainforests.
C warm, wet climates.
34 Crocodiles in dry areas live in caves located:
A underground.
B in mountainsides.
C underwater.
35 What caused migration of crocodiles in North Africa?
A They were driven away by a fierce predator
B Crocodiles evolved from desert creatures to wetland creatures.
C North Africa used to be wetland but slowly turned to desert over time.
Questions 36-40
Complete the sentences below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
-
Desert crocodiles sometimes live in places with dry periods that last up to (36) ______ months.
-
A hole dug by a female crocodile in which to lay eggs can have a (37) ______ of up to 60 cm
-
Local people are not (38) ______ of crocodiles.
-
Crocodiles (39) ______ out of fear when humans populate their habitat.
-
Researchers want to study more about population size, (40) ______, and relations to other populations of crocodiles.
答案
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