New buildings in earthquake-prone areas must be heavily reinforced or else they may otherwise collapse in a strong quake.
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Aor else they may otherwise collapse in a strong quake
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Bor they may collapse in a strong quake
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Cso as not to collapse in a strong quake
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Dnot to collapse in a strong quake
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Eor else it may collapse in a strong quake
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正确答案: B