B
“Please don’t kill me.” This is what a girl said recently when she was attacked by a sea lion(海狮) in California, the US. Usually considered a friendly animal, many believe the sea lion went crazy because it was poisoned(毒害) by algae(海藻).
The “criminal” is a toxin(毒素) from a harmful algae called Pseudo-nitzschia(拟菱形藻). According to the US National Marine Fisheries Service(NOAA Fisheries), more than 100 calls are made every day reporting sea lions and dolphins influenced by this toxin.
John Warner, CEO of the Marine Mammal Care Center in Los Angeles, told the BBC that these animals don’t really attack people. “These animals are reacting to the fact that they are sick,” he said. For example, when sea lions are affected by the toxin, they often appear very tired, confused and have seizures(癫痫). They might even get angry, reported The Guardian.
Pseudo-nitzschia grows fast when deep ocean water moves up to the surface. This brings nutrients that help the algae grow. Fish eat the algae and get the toxin, and when dolphins and sea lions eat those fish, they get sick.
However, according to NOAA Fisheries, the harmful algae showed up earlier than usual. The outbreaks also happen more often and are harder to see coming.
Climate change is a big reason for this, noted The Guardian. Warmer weather and changing ocean conditions make it easier for the algae to grow. Moreover, some scientists also think wildfires in Los Angeles might play a role. Large wildfires have caused the ocean near the beach to have more nutrients.
( )61. Why does the story begin with a girl being attacked by a sea lion?
A. To explain what to do in such situations.
B. To warn people to stay away from sea lions.
C. To criticize humans for polluting the ocean.
D. To show how toxins can make sea lions act dangerously.
(
①Many sea lions are affected by a toxin.
②Pseudo-nitzschia affects sea lions and dolphins.
③Large wildfires give more nutrients to sea animals.
④Scientists found a new toxin from algae.
⑤The outbreaks happen more often and are less predictable.
A. ①③④ B. ③④⑤ C. ①②⑤ D. ②③④
(
A. It makes them grow deeper underwater. B. It causes genetic changes in the algae.
C. It decreases nutrients in the water. D. It causes the algae to appear easier.
(
A. They may continue to face health problems.
B. They may cause climate change to be worse.
C. They may stop eating the algae very soon.
D. They may grow healthier as the ocean gets warmer.
(
A. Climate Change Is the Killer B. Don’t Kill Me
C. Outbreaks of Toxic Algae D. Sea Animals Get Angry
“Please don’t kill me.” This is what a girl said recently when she was attacked by a sea lion(海狮) in California, the US. Usually considered a friendly animal, many believe the sea lion went crazy because it was poisoned(毒害) by algae(海藻).
The “criminal” is a toxin(毒素) from a harmful algae called Pseudo-nitzschia(拟菱形藻). According to the US National Marine Fisheries Service(NOAA Fisheries), more than 100 calls are made every day reporting sea lions and dolphins influenced by this toxin.
John Warner, CEO of the Marine Mammal Care Center in Los Angeles, told the BBC that these animals don’t really attack people. “These animals are reacting to the fact that they are sick,” he said. For example, when sea lions are affected by the toxin, they often appear very tired, confused and have seizures(癫痫). They might even get angry, reported The Guardian.
Pseudo-nitzschia grows fast when deep ocean water moves up to the surface. This brings nutrients that help the algae grow. Fish eat the algae and get the toxin, and when dolphins and sea lions eat those fish, they get sick.
However, according to NOAA Fisheries, the harmful algae showed up earlier than usual. The outbreaks also happen more often and are harder to see coming.
Climate change is a big reason for this, noted The Guardian. Warmer weather and changing ocean conditions make it easier for the algae to grow. Moreover, some scientists also think wildfires in Los Angeles might play a role. Large wildfires have caused the ocean near the beach to have more nutrients.
( )61. Why does the story begin with a girl being attacked by a sea lion?
A. To explain what to do in such situations.
B. To warn people to stay away from sea lions.
C. To criticize humans for polluting the ocean.
D. To show how toxins can make sea lions act dangerously.
(
C
)62. What can we learn from the NOAA Fisheries?①Many sea lions are affected by a toxin.
②Pseudo-nitzschia affects sea lions and dolphins.
③Large wildfires give more nutrients to sea animals.
④Scientists found a new toxin from algae.
⑤The outbreaks happen more often and are less predictable.
A. ①③④ B. ③④⑤ C. ①②⑤ D. ②③④
(
D
)63. How does climate change affect the outbreaks of the harmful algae?A. It makes them grow deeper underwater. B. It causes genetic changes in the algae.
C. It decreases nutrients in the water. D. It causes the algae to appear easier.
(
A
)64. What can be predicted about sea animals in California, according to the passage?A. They may continue to face health problems.
B. They may cause climate change to be worse.
C. They may stop eating the algae very soon.
D. They may grow healthier as the ocean gets warmer.
(
C
)65. The best title for the passage could be “Outbreaks of Toxic Algae
”.A. Climate Change Is the Killer B. Don’t Kill Me
C. Outbreaks of Toxic Algae D. Sea Animals Get Angry
答案
61. D 【解析】细节理解题。根据“the sea lion went crazy because it was poisoned by algae”可知,是为了展示毒素是如何让海狮的行为变得异常危险。故选 D。
62. C 【解析】细节理解题。根据第二、五段内容可知,①②⑤符合文章内容。故选 C。
63. D 【解析】细节理解题。根据“Warmer weather ... the algae to grow.”可知,海藻更容易去生长。故选 D。
64. A 【解析】推理判断题。根据文章内容可知,气候变化、野火等因素导致有害藻类更容易出现且营养物质增加,进而使海狮、海豚等因食用中毒鱼类而生病。这些因素(如气候变化)是持续性的,因此海洋动物可能继续面临健康问题。故选 A。
65. C 【解析】标题归纳题。根据文章内容可知,本文主要分析了藻类爆发的原因。故选 C。
62. C 【解析】细节理解题。根据第二、五段内容可知,①②⑤符合文章内容。故选 C。
63. D 【解析】细节理解题。根据“Warmer weather ... the algae to grow.”可知,海藻更容易去生长。故选 D。
64. A 【解析】推理判断题。根据文章内容可知,气候变化、野火等因素导致有害藻类更容易出现且营养物质增加,进而使海狮、海豚等因食用中毒鱼类而生病。这些因素(如气候变化)是持续性的,因此海洋动物可能继续面临健康问题。故选 A。
65. C 【解析】标题归纳题。根据文章内容可知,本文主要分析了藻类爆发的原因。故选 C。
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