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Have you ever seen chemical-filled beached whales，turtles stuck in plastic beer rings and birds drenched in oil？These images are upsetting，but it should come as no surprise that our bodies of water—particularly oceans—are at great risk.From global warming to tourism，there are many factors playing a role in the declining quality of marine life.Below are three of the biggest threats to marine wildlife today.
Tourism
Coastal development for the sake of tourism has caused serious harm to various marine environments over the years，particularly oceans.Natural habitats are destroyed when developers build roads and resorts，forcing the native animals to adapt，relocate，or die.With an abundance of tourists，these beachside hotspots tend to produce more waste as well，which usually finds its way into the water.In addition，sea creatures are frequently killed so souvenir shops can sell novelty gifts like shark teeth，tortoise shell jewelry，and seal fur.
Commercial hunting
Many marine creatures are purposely hunted by humans.For example，Japanese fishermen have killed between 200 and 1，200 whales every year since 1987.Sharks in particular have been shrinking rapidly on a global scale because of how mercilessly they are pursued.One reason for this is shark finning.Fishermen catch them only to cut off their fins and throw them half-alive back into the water；these fins are then sold for as much as ＄500 a pound and used in specialty dishes like soup for the wealthy.Shark finning is responsible for the killing of approximately 100 million sharks a year.
Overfishing
Overfishing is the act of removing fish from their natural habitats at a rate much faster than they can reproduce，resulting in the global decline of various species.According to the World Wildlife Fund，over thirty percent of the world's fishing grounds have been reduced.Dragging large nets through open water—or trawling（拖網捕魚）as it is professionally known-—is the method of fishing most responsible for this issue.In fact，some species of marine wildlife are being targeted so frequently that they are now endangered，like the Atlantic bluefin tuna.Simply put，the rate that we fish is not sustainable.
（1）Which of the following best shows the structure of the paragraph about tourism？ AA
A． |
B． |
C． |
D． |
C
C
.A．they enjoy eating shark fins
B．they are good at hunting sharks
C．they hunt many sharks on purpose
D．they earn much money by hunting
（3）According to the passage，overfishing will lead to
D
D
.A．the rebuilding of the world's fishing grounds
B．all the fish moving from their original habitats
C．fishermen's fishing skills becoming professional
D．the reduction of marine species around the world
（4）What's the author's purpose in writing the passage？
B
B
A．To get people to learn about the life quality of marine wildlife.
B．To help people realise who is to blame for the threats to sea wildlife.
C．To help people work out an effective way to preserve marine wildlife.
D．To tell people about the relationship between humans and marine wildlife.
【考點】說明文；自然生態(tài)與環(huán)境保護．
【答案】A；C；D；B
【解答】
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發(fā)布：2024/5/23 20:38:36組卷：9引用：0難度：0.3
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