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Lethal mushrooms picked in the California wilderness poisoned 14 people late last year, with three requiring liver transplants, including an 18-month-old girl. The cases were reported to the California Poison Control System over a two-week period in December, although the Centers for Disease Control and Prevention (CDC) didn't announce the incidents until Friday.
The mushroom was known as "the death cap" or Amanita phalloides, a fungus responsible for more than 90% of the world's mushroom-related deaths. The CDC said they pose "serious public health concerns" and urge the people who want to find food in the forest to have an expert inspect their harvest before eating.
The death cap contains a toxic agent and as few as one mushroom can carry a fatal dosage. In many of the incidents in California, patients reported eating multiple mushrooms. In 2016, the state noticed a wild mushroom poisonings as well as an abundance of wild mushroom growth brought on by rain and very warm temperatures.
The cases involved patients picking the mushrooms for themselves while others received the mushrooms from another person. It typically took several hours for the patients to develop the health problems beginning with the ache in the stomach.
Those affected ranged in age from 18 months to 93 years old. A 37-year-old man picked and ate one mushroom in Santa Rosa, north of San Francisco, and felt symptoms 10 hours later. A group of five people all got sick, including the 18-month-old girl, after all ate wild mushrooms picked by a stranger in the mountains.
Eleven of the patients recovered and three required liver transplants. In 2012, four people died at a Northern California hospital after all ate a soup made from poisonous mushrooms. The CDC asks people to be careful when picking and eating mushrooms. Before eating, mushrooms should first be examined, identified and reviewed by a mycologist, someone who studies fungi.

1.Why was the mushroom considered as “the death cap”?

A Because it was already reported to the California Poison Control System.

B Because Disease Control and Prevention didn't announce the incidents.

C Because it led to 90% of the world's mushroom-related deaths recently.

D Because the mushrooms from California poisoned no people last year.

解析：选C。细节理解题。根据第二段第一句的a fungus responsible for more than 90% of the world's mushroom-related deaths可以得知是因为蘑菇造成了很多人的死亡，所以蘑菇被成为the death cap。故选C。

2.What did the CDC suggest people do before eating mushrooms?

A They should let mushrooms carry the fatal dosage.

B They should get rid of the toxic agent in mushrooms.

C They should have the mushrooms checked at first.

D They should learn serious public health concerns.

解析：选C。细节理解题。根据第二段最后一句的urge the people who want to find food in the forest to have an expert inspect their harvest before eating可以得知CDC建议人们在吃不认识的蘑菇之前，应该先让专家检查一下。故选C。

3.Which of the following statements is NOT true according to the passage?

A Much rain and warm temperatures may contribute to the growth of mushrooms.

B Stomachache is always the first typical symptom for poisoned patients.

C Four patients at a Northern California need liver transplants.

D The CDC suggest people examine and identify the mushrooms before eating.

解析：选C。C 细节理解题。根据第三段最后一句可知A项正确；根据第四段最后一句可知B项正确；根据最后一段第一二句可知C项错误；根据第六段最后一句可知D项正确。故选C。

4.In which column of a newspaper can you most probably read this article?

A Travel.

B Environment.

C Health.

D Gardening.

解析：选C。C 文章出处题。本文主要讲述的是食用毒蘑菇导致中毒的事件，跟人的生命健康安全有关，应该出现在“健康”栏目。故选C。