Section BDirections: In this section, you will hear 3 short passages. At the end of each p

Section B

Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.

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A．One of the bridges between North and South London collapsed.

B．The heart of London was flooded.

C．An emergency exercise was conducted.

D．100 people in the suburbs were drowned.

请帮忙给出正确答案和分析，谢谢！