Passage Reference: The other good thing about the patches is that apparently they'll be cheap to manufacture. Good.

Tips: Listen for clear words about cost like cheap or expensive.

Why the other options are wrong:

• It should save time.: The patch tells you if food is safe, but the speaker does not say it saves time. This is a partial truth trap.
• It will make money.: There is no mention of profit from selling the patches. This is a distractor trap.

Key Vocabulary:

• manufacture = make
• cheap = low cost

Question Focus: Advantage of the ripeness sensor project

Passage Reference: That's got to be a quicker way to check for ripeness than taking each box off the shelf and opening it. Definitely.

Why this is correct: The speaker says it is a quicker way to check for ripeness. Faster checking means it saves time, which is the key benefit.

Tips: Words like quicker and faster usually signal a time-saving benefit.

Why the other options are wrong:

• It will involve very little cost.: Cost is not mentioned for this project. This is a distractor trap.
• It will make money.: Making profit is not discussed here. This is a context shift trap.

Key Vocabulary:

• quicker = faster
• scan = check

Question Focus: Advantage of the waste tracking technology

Passage Reference: Their waste tracking technology means that caterers can see how much food is being wasted and why. That'll increase profits for them eventually. Yes.

Why this is correct: The speaker says it will increase profits for caterers. Increasing profits means it will make money.

Tips: Listen carefully for money words like profit, cost, or earnings.

Why the other options are wrong:

• It will benefit local communities.: Communities are not mentioned here. This is a context shift trap.
• It should save time.: Time is not discussed. This is a distractor trap.

Key Vocabulary:

• profits = money earned
• caterers = food service companies

Question Focus: Advantage of the smartphone application

Passage Reference: In the long run, that'll definitely benefit poorer families in the neighborhood.

Why this is correct: The speaker says it will benefit poorer families in the neighborhood. That clearly means it benefits local communities.

Tips: Community words like families and neighborhood often signal social benefits.

Why the other options are wrong:

• It will make money.: This project focuses on donations, not profit. This is a partial truth trap.
• It should save time.: Saving time is not mentioned. This is a distractor trap.

Key Vocabulary:

• donation = giving
• distribute = give out

Question Focus: Advantage of compulsory food waste composting

Passage Reference: we'd be doing something positive about the problem of food waste ourselves, rather than relying on the government to sort it out.

Why this is correct: The speaker says people would act rather than relying on the government. This shows personal responsibility.

Tips: Listen for opinion phrases that show attitudes and responsibility.

Why the other options are wrong:

• It will benefit local communities.: Community benefit is not the main point here. This is a partial truth trap.
• It will involve very little cost.: Cost is not discussed. This is a distractor trap.

Key Vocabulary:

• relying on = depending on
• composting = recycling food waste

General Tips:

• Read all options first and underline key ideas like time, money, or community.
• Questions follow the order of the recording, so use the previous answer to predict the next one.
• Do not choose an option just because one word matches. Focus on the main advantage.
• Listen for opinion phrases like I thought was great or the other good thing.
• Eliminate options that are not mentioned at all in the audio.