IELTSNgheCâu hỏi luyện tập20

The correct answer is F because the rover is directed to a site known to contain a wide variety of organic material.

Associated Text:
The rover then has to find a place where there's a wide variety of organic material, so it's steered to a site that is known to contain that.

The correct answer is E because the speakers explain that surface radiation could destroy organisms, so samples are drilled from below the surface to avoid radiation.

Associated Text:
Unlike Earth, the surface might be exposed to high levels of radiation, which would destroy any organism living right on the top.

The correct answer is C because after the sample is ground into powder, the next step is to expose the powder to heat.

Associated Text:
the sample is ground into a fine powder.
Daniel: Doesn't that destroy any tiny structures?
Lena: Luckily, no. And in the next stage, the powder has to be exposed to heat,

The correct answer is G because the mass spectrometer is used to scan for tiny biological signs, and microbes are given as the example.

Associated Text:
This level of analysis is needed to scan for tiny biological signs that are far smaller than fossils, for example, microbes.

The correct answer is D because the final step is to send data back to Earth and compare the results with established Earth-based data.

Associated Text:
The results are then matched against established Earth based data, for example data from large bodies of water, or from desert soils, to see how the alien sample compares.