题目内容：

It was dawn of March 21, 2018. Gary Messina was on his morning run along New York City’s East River. Suddenly something caught his eye – a large 60-year-old man balancing on the four-foot-high fence that guarded the path from the water. As Messina got closer to the scene, the man took a step forward and slipped into the dark river below.

When Messina reached nearer, the man was struggling in the water, clearly unable to swim. Other joggers also heard the man’s cry. David Blauzvern and John Green dropped their phones and keys on land and jumped in. “People had called the police, but it was unclear when they’d get there.” says Green. “We just reacted.” Messina joined them in the river. Just as the jumper was losing strength, Blauzvern take hold of him. The pair were about 30 yards from the seawall when Messina and Green caught up to them. They seized the man, with Blauzvern supporting his back and Messina and Green holding him up from either side. As the men made their toward the concrete seawall that stretched (延伸) for blocks in each direction, Blauzvern had an awful realization: there was no way out of the river.

By now, a crowd had gathered on land. “A rescue boat is on its way,” someone yelled to them. Swimming forward was getting tougher by the minute. The jumper, who was six foot two and weighed around 260 pounds, was heavy in his rescuers’ arms. After ten minutes, they managed to get to the river’s edge. “I’ve never been so out of breath,” says Blauzvern.

Fifteen minutes after the men had jumped into the river, the two-man rescue boat appeared. But because it couldn’t risk getting too close to the seawall, the men had to swim out to it. “I was completely out of energy at this point,” says Blauzvern. The men in the water pushed the jumper while the men in the boat pulled him up and, finally, to safety. The man they had saved was taken to the hospital for evaluation(评估). Details on his condition have not been known. As for the rescuers, each of them was at work by 10:30 a.m. “I was a bit late,” admits Blauzvern, smiling. “But I had a good excuse.”

1.The story mainly centers around ________.

A. why the old man slipped into the river

B. who saved the old man

C. how the old man was rescued

D. when and where the accident happened

2.Who was the third to jump into the water and join the rescue?

A. Gary Messina.    B. David Blauzvern.

C. John Green.    D. An unknown jogger.

3.Of the following statements, which one sounds reasonable based on the passage?

A. The rescued man is rather tall and fat.

B. Police would never be found on the spot of rescue.

C. The process of rescuing the man took up the whole morning/

D. The man was actually saved by the two-man rescue boat.

4.Which of the following can be inferred from the passage?

A. The man wanted to kill himself in the river.

B. The men is the river were all good swimmers.

C. The man was taken home immediately he was saved.

D. Blauzvern felt at ease even if he was late for work that day.