Inventions – B1 English Listening Exercise

1 Correct Answer: (A) People can create personalized toys using their own computers.

• Explanation: The speaker mentions that you can “design your own character on a computer and print it right at home.” Option (A) correctly paraphrases this using the word “personalized” for “customized/your own.” Option (B) is a trap; the speaker mentions “traditional ink” and “standard action figures” but says 3D printers are unlike traditional printers and are used instead of buying standard figures. Option (C) is plausible but not mentioned.

2 Correct Answer: (B) They are designed to fit the specific size of the individual.

• Explanation: The audio states that each part is “printed to match the patient’s exact measurements.” Option (B) uses synonyms (“fit the specific size”) for this phrase. Option (C) is a trap; the speaker says the older versions were “mass-produced”, not the 3D-printed ones. Option (A) is not mentioned in the audio.

3 Correct Answer: (B) To show how a specific machine is useful in different ways.

• Explanation: The speaker talks about the 3D printer and gives two distinct examples of its usefulness: making toys (“fun and games”) and creating medical parts (“improving healthcare”). Option (A) is wrong because he doesn’t talk about repairing anything. Option (C) is a trap; the tone is very positive, not a warning about negative effects.

Alex: Good morning, everyone. Today, I’d like to talk about one of the most fascinating modern inventions: the 3D printer.

Unlike traditional printers that put flat ink on paper, a 3D printer builds solid objects layer by layer, usually using plastic. For example, many companies are now using this technology to manufacture customized toys. Instead of buying a standard action figure from a store, you can design your own character on a computer and print it right at home.

But this machine is not just for fun and games. In the medical field, this technology is truly changing lives. Doctors are now using 3D printers to create artificial body parts, such as prosthetic hands or legs. Because each part is printed to match the patient’s exact measurements, they are much more comfortable than the older, mass-produced versions.

In short, whether it’s making playtime more creative or improving healthcare, 3D printing is shaping our future. Thank you for listening.

1 Correct Answer: (B) It makes employees wait a long time to enter the office.

• Explanation: Sarah states that the current machine is “causing huge delays” and there is “a long line of staff waiting.” Option (B) correctly paraphrases this situation. Option (A) is a trap; Mr. Davis asks if it is “broken”, but Sarah says “not exactly broken”. Option (C) is plausible for HR problems but is never mentioned.

2 Correct Answer: (A) The price of setting up the equipment.

• Explanation: Mr. Davis asks, “Isn’t that very expensive to install?” Option (A) uses synonyms (“price” for “expensive”, “setting up” for “install”). Option (B) sounds like a real-world concern for facial recognition but is not mentioned in the audio. Option (C) is a trap; Sarah mentions the system is “incredibly fast,” which is a benefit, not the manager’s concern.

3 Correct Answer: (B) Calculate how much the new system will cost.

• Explanation: Mr. Davis asks Sarah to “put together a cost estimate,” and she agrees. Option (B) is a clear paraphrase of “cost estimate.” Option (A) is a trap; Friday is the deadline for the estimate, not the day they buy the machine. Option (C) is a trap; they want to stop using ID cards, not give out new ones.

Sarah: Excuse me, Mr. Davis. Do you have a minute? I’d like to discuss our current time attendance system.

Mr. Davis: Sure, Sarah. What’s the issue? Is the card scanner broken again?

Sarah: Well, not exactly broken, but it’s causing huge delays. Every morning, there’s a long line of staff waiting to scan their ID cards. Sometimes, people forget their cards at home, which creates a lot of extra paperwork for my department.

Mr. Davis: Hmm, I see. What do you suggest we do?

Sarah: I was looking into some new inventions, and I highly recommend upgrading to a facial recognition machine.

Mr. Davis: Facial recognition? Isn’t that very expensive to install?

Sarah: The initial cost is a bit higher, yes. But it’s incredibly fast. Employees just walk past it, and the system records their attendance instantly. We wouldn’t have to spend money replacing lost ID cards anymore, either.

Mr. Davis: That does sound efficient. Okay, can you put together a cost estimate for me by Friday?

Sarah: Absolutely. I’ll get that ready for you.

1 Correct Answer: (A) An intelligent drinking container.

• Explanation: Liam suggests a “smart water bottle.” Option (A) is a direct paraphrase (“intelligent” for “smart”, “drinking container” for “water bottle”). Option (B) is a trap; they discuss charging mobile batteries later, but it wasn’t Liam’s initial idea. Option (C) is a trap; Emma mentions “water-resistant fabric” for the backpack, not a jacket.

2 Correct Answer: (B) To provide electrical power for mobile devices.

• Explanation: Noah explains that students can “plug in their smartphones and keep them fully charged.” Option (B) summarizes this using synonyms (“electrical power for mobile devices”). Option (A) is not mentioned. Option (C) is a trap; they mention “walking to campus” as the time when the bag charges the phone, not that the bag measures the distance.

3 Correct Answer: (C) By using a specific type of lightweight technology.

• Explanation: When Liam worries the bag will be “extremely heavy”, Emma suggests using “flexible panels” that “don’t weigh much at all.” Option (C) paraphrases this as “lightweight technology”. Option (A) is a trap; the battery bank is mentioned by Noah, but Emma never suggests removing it. Option (B) is completely made up and not in the audio.

Emma: Alright guys, the Science Innovation Fair is next month. We really need a solid project. Any thoughts?

Liam: Well, um, what if we design a smart water bottle that tracks how much liquid you drink every day?

Noah: That’s a bit too common, Liam. I was thinking about something we actually use all the time. How about a school backpack with a built-in solar panel?

Emma: Oh, I like the sound of that! But what would the solar panel actually do?

Noah: We could connect it to a battery bank inside. That way, students can plug in their smartphones and keep them fully charged while they are just walking to campus.

Liam: That’s brilliant. My mobile is always dying by the afternoon. But wait… wouldn’t attaching a solar panel make the bag extremely heavy to carry?

Emma: Not necessarily. We can use those new flexible panels. They are incredibly thin and don’t weigh much at all. Plus, we could use a water-resistant fabric so the electronics don’t get ruined if it rains.

Noah: Exactly. Let’s write down a list of components we need to buy.

1 Correct Answer: (C) It can process whole documents without ruining their design.

• Explanation: Mark explains that you can “upload entire presentations… while keeping the original layout.” Option (C) paraphrases this idea (“process whole documents” for “upload entire presentations”, and “without ruining their design” for “keeping the original layout”). Option (A) is a trap; Lisa mentions “free translation websites” to compare, but this new tool is an internal company invention. Option (B) sounds like a cool AI feature but is never mentioned.

2 Correct Answer: (A) Private details belonging to the company’s customers.

• Explanation: Mark warns the staff: “please do not input any sensitive client information.” Option (A) is a direct paraphrase (“Private details” = “sensitive information”, “customers” = “clients”). Option (B) is a trap; Mark says everyday emails and internal memos are “perfectly fine to use.” Option (C) is also a trap; Mark encourages uploading presentations and spreadsheets to save time.

3 Correct Answer: (B) The artificial intelligence system is still learning.

• Explanation: Mark states the reason for the restriction is that “the AI is still in its training phase.” Option (B) uses synonyms (“learning” for “in its training phase”). Option (A) is a trap; Mark explicitly says “While GlobalLink is secure…” (meaning it is safe). Option (C) is a plausible worry about AI, but Mark does not mention grammar mistakes in the audio.

Mark: Good afternoon, everyone. Thanks for coming. Today, I’m excited to introduce our company’s new internal invention: “GlobalLink AI.” It’s a custom translation software designed specifically for our daily tasks.

Lisa: Excuse me, Mark. How is this different from the free translation websites we already use on the internet?

Mark: Great question, Lisa. First of all, it’s incredibly efficient. Instead of copying and pasting text paragraph by paragraph, you can upload entire presentations or spreadsheets. It translates the whole file in seconds while keeping the original layout. It saves a massive amount of time.

Lisa: That sounds amazing. Can we use it for all our international contracts?

Mark: Actually, that brings me to a crucial point. While GlobalLink is secure, the AI is still in its training phase. Therefore, please do not input any sensitive client information or financial records into the system just yet. For everyday emails and internal memos, it’s perfectly fine to use. We will let you know when it’s cleared for highly classified documents.

1 Correct Answer: (C) It produces a visual signal.

• Explanation: Leo states that “the bottle starts glowing to remind you to drink.” Option (C) uses a synonym (“visual signal” for “glowing”). Option (A) is a trap; it sounds like a common alarm feature, but it’s not mentioned. Option (B) is also a trap; it’s a common feature for smart devices, but this bottle only uses light.

2 Correct Answer: (A) From observing a health issue an older family member had.

• Explanation: Leo says the inspiration came from his grandfather, who was forgetting to drink fluids and feeling dizzy. Option (A) correctly paraphrases “grandfather” to “older family member” and “feeling dizzy” to “health issue.” Option (B) is a trap; Chloe asks if he read about it online, but Leo replies, “Actually, no.” Option (C) is a trap because it mentions forgetting to drink, but it applies to his grandfather, not Leo himself.

3 Correct Answer: (B) Programming the software for the device.

• Explanation: Leo explains that “coding the electronic timer took weeks of trial and error.” Option (B) paraphrases “coding” as “programming” and “electronic timer” as “software.” Option (A) is a trap; he says the physical container was “surprisingly easy.” Option (C) is not mentioned in the audio.

Chloe: Welcome to the School Science Podcast. Today, I’m talking to Leo, who recently invented a device called the “HydrateMate.” So, Leo, what exactly is it?

Leo: Hi Chloe. Well, um, it’s basically a smart water bottle. It has a built-in sensor and a small battery. If you haven’t taken a sip in two hours, the bottle starts glowing to remind you to drink.

Chloe: That’s quite clever! What gave you the idea for this? Did you read about a similar gadget online?

Leo: Actually, no. The inspiration came from my grandfather. He sometimes forgets to drink enough fluids during the day, which was causing him to feel dizzy. I wanted to create something simple to help him stay healthy.

Chloe: That’s a wonderful reason. Was it difficult to build?

Leo: The physical container was surprisingly easy to put together. However, coding the electronic timer took weeks of trial and error. I almost gave up!

Chloe: But you didn’t, and now it’s a great success. Thanks for sharing, Leo!