题目

阅读下面短文，在空白处填入 1个适当的单词或括号内单词的正确形式。 Ocean pollution is serious. It can kill ocean creatures  even harm humans. It's vital to focus on this issue and find ways to prevent pollution in our waters. Pollution in the ocean (severe) harms sea creatures. For example, ocean animals often mistake pieces of plastic for food. As a result, their bellies fill up with plastic from bottles, containers and beach toys, can be deadly to the animals. Ocean pollution (cause) risks for humans, too. Polluted water can result diseases among swimmers. Also, people eat fish which might （poison）with harmful chemicals from oil leaks and rubbish in the sea water. Some people may argue that ocean pollution is not serious, (believe)that the ocean is so vast that it can absorb all kinds of pollution. However, the examples of ocean creatures (kill) by pollution prove them wrong. In (conclude), it's clear that ocean pollution is a (challenge)problem. We need to learn more about how to stop it. 答案：【1】and【2】severely【3】which【4】causes【5】in【6】be poisoned【7】believing【8】killed【9】conclusion【10】challenging

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