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Four critically endangered mountain gorillas, including a baby gorilla, have been killed by an apparent lightning strike in their living place in Uganda, conservation officials have said. The Greater Virunga Transboundary Collaboration (GVTC) said it was "deeply saddened by the unfortunate deaths of four mountain gorillas from the Hirwa family in Mgahinga National Park in Uganda".

"The mountain gorillas are suspected to have been killed by a lightning strike on 3 February 2020. The gorillas that lost their lives include three adult females and a male infant," the researchers said. The possible cause of death based on the "gross lesions" on the animals' bodies, "field assessment observation and history... is likely to be hurt and killed by the lightning that night". A team led by GVTC staff, along with members of the Uganda Wildlife Authority (UWA), the Rwanda Development Board (RDB) and Gorilla Doctors collected samples for detailed laboratory analysis for a full post-mortem which will be completed in two to three weeks.

The health of the 17-member family, which crossed into the park from Rwanda in August, will be closely monitored. On Friday, the GVTC tweeted that two new babies had been seen in the park. It is not known if one of them was the youngster killed.

There are only about 1,000 mountain gorillas left on earth, living at between 8,000 and 13,000ft (2,438-3,962m) on the green, volcanic slopes of Rwanda, Uganda, and the Democratic Republic of Congo, according to National Geographic. Though their numbers have increased, they are on the critically endangered list of the International Union for the Conservation of Nature, which sets the conservation status of species.

1.How did conservation officials feel about the accident?

A They felt really heartbroken.

B They got very worried.

C They felt quite shocked.

D They became confused.

解析：选A。A 推理判断题。根据文章第一段第二句的it was "deeply saddened by the unfortunate deaths of four mountain gorillas可以得知保护人员对猩猩的去世感到很悲伤，故选A。

2.How did people know the reason for the gorillas’ death?

A There was a mountain landslide.

B There was a great bushfire.

C They based on the broken animals’ bodies.

D They observed the lightning that night.

解析：选C。C 细节理解题。根据文章第二段第三句The possible cause of death based on the "gross lesions" on the animals' bodies可以得知研究人员根据动物尸体上的伤推出猩猩的死因，故选C。

3.What did the researchers do with the gorillas when they came into the park?

A They took the samples back.

B They watched the gorillas carefully.

C They caught the younger gorilla.

D They gave the gorillas enough food.

解析：选B。B 细节理解题。根据文章第三段第一句The health of the 17-member family, which crossed into the park from Rwanda in August, will be closely monitored可以得知研究人员密切观察保护区的猩猩，故选B。

4.What is the main idea of the last paragraph?

A The cause of the mountain gorillas’ death is clear.

B Uganda is able to protect the mountain gorillas well.

C The mountain gorillas are in a dangerous situation.

D The mountain gorillas can only be found in Congo.

解析：选C。主旨大意题。根据文章最后一段最后一句they are on the critically endangered list of the International Union for the Conservation of Nature可以得知该段主要是讲述山地大猩猩的现状，故选C。