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Questions 21 and 22
Choose TWO letters, A-E.


Which TWO points does Adam make about his experiment on artificial sweeteners?

A

The results were what he had predicted.

B

The experiment was simple to set up.

C

A large sample of people was tested.

D

The subjects were unaware of what they were drinking.

E

The test was repeated several times for each person.

ADAM: OK Rosie, shall we try to get some ideas together for our presentation on diet and obesity?

亚当:好啦,罗西。我们要不要为我们关于饮食和肥胖的演讲提一些想法?

ROSIE: Sure.

罗西:好呀。

ADAM: I can talk about the experiment I did to see if people can tell the difference between real sugar and artificial sweeteners.

亚当:我可以谈谈我做过的实验,看看人们是否能分辨出真糖和人造甜味剂。

ROSIE: Where you gave people drinks with either sugar or artificial sweeteners and they had to say which they thought it was?

罗西:你把含糖或者含人造甜味剂的饮料给实验对象,然后让他们说出他们的判断?

ADAM: Yeah. It took me ages to decide exactly how I'd organise it, especially how I could make sure that people didn't know which drink I was giving them.

亚当:是啊。我花了很长时间才决定该如何组织实验,尤其是如何确保人们不知道我给他们喝的是哪种饮料。

It was hard to keep track of it all, especially as I had so many people doing it – I had to make sure I kept a proper record of what each person had had.

记录全部信息很难,尤其是当时的实验对象特别多。我必须确保我正确记下了给每个人提供的饮料。

ROSIE: So could most people tell the difference?

罗西:那大部分人能说出差别吗?

ADAM: Yeah – I hadn't thought they would be able to, but most people could.

亚当:是的。我从没想过大家都能做到,但是大部分人都可以。

ROSIE: Then there's that experiment I did measuring the fat content of nuts, to see if the nutritional information given on the packet was accurate.

罗西:然后我做了一个实验来测量坚果的脂肪含量,看看包装上给出的营养信息是否准确。

ADAM: The one where you ground up the nuts and mixed them with a chemical to absorb the fat?

亚当:你把坚果磨碎,然后和化学物质混合以吸收脂肪的那个?

ROSIE: Yes. My results were a bit problematic – the fat content for that type of nut seemed much lower than it said on the package.

罗西:对。我的结果有点问题。这种坚果的脂肪含量似乎比包装上说的要低得多。

But I reckon the package information was right.

但我认为包裹信息是对的。

I think I should probably have ground up the nuts more than I did.

我想我应该把坚果磨得更碎些。

It's possible that the scales for weighing the fat weren't accurate enough, too.

有可能称脂肪的秤也不够精确。

I'd really like to try the experiment again some time.

我真的很想改天再做一次实验。

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