TOEFL Listening: TPO-TOEFL阅读TPO - S90RQ31T1MJOJA7PN$

Paragraph 3 strongly suggests that if the bolide impact theory is correct, the majority of the extinctions associated with the K-T event resulted from A. sunlight being blocked for months by dust and smoke in Earth's atmosphere B. widespread flooding that followed the displacement of huge volumes of seawater C. the leveling of the landscape by the shock wave that was generated when the bolide struck Earth D. the rise in global temperatures caused by the fires that burned much of the landscape