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Complete the notes below. Write ONE WORD ONLY for each answer. The sleepy lizard (tiliqua rugosa) Description - They are common
Complete the notes below. Write ONE WORD ONLY for each answer. The sleepy lizard (tiliqua rugosa) Description - They are common
admin
2018-05-28
18
问题
Complete the notes below.
Write ONE WORD ONLY for each answer.
The sleepy lizard (tiliqua rugosa)
Description
- They are common in Western and South Australia
- They are brown, but recognisable by their blue 【L31】______
- They are relatively large
- Their diet consists mainly of 【L32】______
- Their main predators are large birds and 【L33】______
Navigation study
One study found that lizards can use the 【L34】______to help them navigate
Observations in the wild
Observations show that these lizards keep the same 【L35】______ for several years
What people want
- Possible reasons:
- to improve the survival of their young
(but little 【L36】______has been noted between parents and children)
- to provide 【L37】______for female lizards
Tracking study
A study was carried out using GPS systems attached to the 【L38】______of the lizards
This provided information on the lizards’ location and even the number of 【L39】______taken
- It appeared that the lizards were trying to avoid one another This may be in order to reduce chances of 【L40】______
【L31】
Last week, we started looking at reptiles, including crocodiles and snakes. Today, I’d like us to have a look at another reptile - the lizard - and in particular, at some studies that have been done on a particular type of lizard whose Latin name is tiliqua rugosa. This is commonly known as the sleepy lizard, because it’s quite slow in its movements and spends quite a lot of its time dozing under rocks or lying in the sun.
I’ll start with a general description. Sleepy lizards live in Western and South Australia, where they’re quite common. Unlike European lizards, which are mostly small, green and fast-moving, sleepy lizards are brown, but what’s particularly distinctive about them is
the colour of Q31 their tongue, which is dark blue
, in contrast with the lining of their mouth which is bright pink. And they’re much bigger than most European lizards.
They have quite a varied diet, including Q32 insects and even small animals, but they mostly eat plants of varying kinds.
Even though they’re quite large and powerful, with strong jaws that can crush beetles and snail shells, they still have quite a few predators. Large birds like cassowaries were one of the main ones in the past, but nowadays
they’re more likely to be caught and killed by snakes.
Actually, Q33 another threat to their survival isn’t a predator at all, but is man-made - quite a large number of sleepy lizards are killed by cars when they’re trying to cross highways.
One study carried out by Michael Freake at Flinders University investigated the methods of navigation of these lizards. Though they move slowly, they can travel quite long distances. And he found that even if they were taken some distance away from their home territory,
they could Q34 usually find their way back home as long as they could see the sky - they didn’t need any other landmarks on the ground.
Observations of these lizards in the wild have also revealed that their mating habits are quite unusual. Unlike most animals,
it seems that they’re relatively monogamous, returning to the Q35 same partner year after year.
And the male and female also stay together for a long time, both before and after the birth of their young.
It’s quite interesting to think about the possible reasons for this. It could be that it’s to do with protecting their young - you’d expect them to have a much better chance of survival if they have both parents around. But in fact observers have noted that once the babies have hatched out of their eggs,
they have hardly any contact with their parents.
So, there’s not Q36 really any evidence to support that idea.
Another suggestion’s based on the observation that male lizards in monogamous relationships tend to be bigger and stronger than other males. So maybe the male lizards stay around so
they can give the female lizards protection from other males.
But again, we’re Q37 not really sure.
Finally, I’d like to mention another study that involved collecting data by tracking the lizards. I was actually involved in this myself. So we caught some lizards in the wild and
we developed Q38 a tiny GPS system that would allow us to track them, and we fixed this onto their tails.
Then we set the lizards free again, and we were able to track them for twelve days and gather data, not just about their location,
but even about how many steps they took during this period.
Q39
One surprising thing we discovered from this is that there were far fewer meetings between lizards than we expected - it seems that they were actually trying to avoid one another. So why would that be? Well, again we have no clear evidence, but
one hypothesis is that male Q40 lizards can cause quite serious injuries to one another, so maybe this avoidance is a way of preventing this
- of self-preservation, if you like. But we need to collect a lot more data before we can be sure of any of this.
选项
答案
tongue(s)
解析
我们首先听到了定位词brown,然后听到“the colour of their tongue,which is dark blue.”,其中提示词their、定位词blue原词出现,tongue符合我们之前的预测,因此答案为tongue。另外,本题出现限定词先后次序调整的现象,不能局限于只用blue来定位,如果你仅关注blue一词,可能会错过答案,所以记得选取一至两处定位,避免失分。
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