This news is from Colombia. In the Amazon forest, a plane crashed (坠机). Luckily, four children survived (存活). But their mother, the pilot and another person died.

The children are 13, 9, 4, and 1 year old. They stayed in the forest for 40 days. Many people looked for them. They searched for a long time. At last, people found them. They were hungry and hurt. They must be sent to the hospital.

Why did they survive? Because they learned about how to live in the forest from their grandmother. 

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1.How did the four children travel?

A By train.

B By car.

C By plane.

D By ship.

解析：选C。C细节理解题。根据第一段第二、三句“In the Amazon forest, a plane crashed (坠机). Luckily, four children survived (存活).”可知，他们乘坐飞机出行。故选C。

2.The oldest child is _________ years old.

A 1

B 4

C 9

D 13

解析：选D。D细节理解题。根据第二段第一句“The children are 13, 9, 4, and 1 year old.”可知，最大的孩子13岁。故选D。

3.How long did the children stay in the forest?

A For 14 days.

B For 40 days.

C For 4 days.

D For 44 days.

解析：选B。B细节理解题。根据第二段第二句“They stayed in the forest for 40 days.”可知他们在哥伦比亚亚马逊雨林中度过40天后获救。故选B。

4.When the children were found, they were _________.

A hurt

B happy

C healthy

D strong

解析：选A。A细节理解题。根据第二段倒数第二句“They were hungry and hurt.”可知，他们被救很饿，还受伤了。故选A。

5.Who helped the four children the most?

A Their grandmother.

B Their mother.

C Their father.

D Their grandfather.

解析：选A。A细节理解题。根据最后一句“Because they learned about how to live in the forest from their grandmother.”可知，他们从祖母那里学会了如何在丛林里生存。故选A。