单项选择题

Which animal do many trainers prefer to work with（）

A. Dogs.
B. Cats.
C. Chimpanzees.
D. Horses.

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单项选择题
（31）（）

A. evolved
B. made
C. played
D. designed
单项选择题
It was reported to have occurred（）

A. inside Manila’s port
B. in Singapore
C. near the Manila Bay
D. in Malaysia
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