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题目材料：
DIRECTION:
Each of the following groups of statements includes ONE main idea and two supporting details.
Please mark on the statement this is the main idea.
Group 1
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A.The swordfish is an extremely dangerous and violent creature
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B.Swordfish occasionally attack and pierce the hulls of ships with their swords.
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C.Swordfish have slashed fishermen and pulled sailors to their deaths.
A显示答案
