单选题 In contrast, the threat posed by the second source of major terrorism is real and large.
A. proposed B. presented C. predicted D. prevented

【正确答案】 B
【答案解析】pose：构成，摆姿势，提出；propose：建议，提议；present：提出，展示，展现，提交；predict：预测；prevent：防止，预防