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雅思听力 Part 4 · Red King Crab

Listening Part 4 · 10 题 · 音频可反复播放

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Part 4 · Red King Crab

Questions 31-40

Complete the notes below. Write ONE WORD ONLY for each answer.

The Red King Crab

Introduction

The Red King Crab is migrating into European waters from the far 31 .

Its rapid spread threatens local marine species such as 32 , which it preys on.

Physical characteristics

The Red King Crab has a deep red 33 , that develops after several molts.

Juvenile crabs often remain in 34 waters where predators are fewer.

Migration behaviour

When travelling in large groups, the crabs damage long stretches of 35 .

During 36 , they tend to move into deeper water.

Impact on people

Fishermen complain that their 37 are frequently damaged.

Some communities are concerned about the effect on their local 38 .

Management and control

In the 1960s, Soviet 39 intentionally introduced the Red King Crab to boost fishery production.

Today, environmental 40 warn that its ecological impact may be greater than expected.

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