每日英语听力

当前播放

04 Test One-Section Four

SECTION 4

You will hear part of a student presentation about the variety of different species that live in the world's oceans. First, you'll have some time to look at questions 31 to 40.

. . . . . .

Now, listen carefully and answer questions 31 to 40.

. . . . . .

I've been looking at ocean biodiversity, that's the diversity of species that live in the world's oceans.

About 20 years ago biologists developed the idea of what they called 'biodiversity hotspots'.

These are the areas which have the greatest mixture of species, so one example is Madagascar.

These hotspots are significant because they allow us to locate key areas for focusing efforts at conservation.

Biologists can identify hotspots on land, fairly easily, but until recently, very little was known about species distribution and diversity in the oceans, and no one even knew if hotspots existed there.

下载全新《每日英语听力》客户端,查看完整内容
点击播放