Only administrators see this. Unlocks until you close the tab, so you can review the other levels’ content.
Create a free account to start the JLPT programme and keep all your progress.
Bilingual articles stay free to read, no account needed.
Middle paragraph – explanation ④
第4部 内容理解（中文）・説明文④. Familiar structure: 見た目の印象 (むだ使いのように見える) → しかし、実は… → まず / また (two measures) →以上のような… (summary). Tip: the question "why does it LOOK like a waste of electricity" must get the idea in PARAGRAPH 1, don't get the technical explanation.
町やビルで見かける飲み物の自動販売機は便利だが、夜、誰も使っていないのに、明かりがついているのを見ると、電気代をむだ使いしているように感じられる。
しかし、実は自動販売機はエネルギーを節約する技術が非常に進んでいる機械である。そこにはどのような工夫があるのだろうか。
まず、冷たい飲み物は、全部を冷やすのではなく、売る直前の分だけ冷やすようになっている。自動販売機の中にあるコンピューターが、曜日や時間による売れ方の変化を見て、最小限の数だけを冷やすのである。だから、電気代が少なくてすむ。
また、冷たい飲み物と温かい飲み物を同時に売る自動販売機の場合、冷たい飲み物を冷やした時に出る熱を使って、温かい飲み物を温めることができるようになっている。
以上のようなさまざまな技術によって、自動販売機は電力の消費を減らすことができたのである。
Explanation: Paragraph 1: 夜、誰も使っていないのに、明かりがついているのを見ると… → ②. ① reverse the meaning of the article (technology is very advanced). ③④ is not the stated reason.
Why do vending machines look like they're using electricity uselessly?
① Because energy saving techniques for vending machines are not progressing. · ② Because even when no one is using it, the light is still on. · ③ Because not only during the day but also at night there are people using it. · ④ Because the machines are placed in many places such as streets and buildings.
Explanation: Article: コンピューターが曜日や時間による売れ方の変化を見て、最小限の数だけを冷やす→ ④ (know when to sell how much so only refrigerate that portion). ② The article does not mention rapid cooling in a short period of time. ③ is not the outdoor temperature.
Regarding how to cool drinks in vending machines, which statement is correct?
① Do not cool quickly but cool slowly under computer management. · ② Thanks to the computer, refrigerate for a short time just before selling. · ③ The computer checks the change in outside temperature and then cools it. · ④ Because the computer knows when to sell how much, it only cools that amount.
Explanation: Paragraph 「また」: 冷やした時に出る熱を使って、温かい飲み物を温める → ①. ② reverse. ③ left cards (the machine sells both cards at the same time). ④ the article does not say.
Regarding how to save energy in vending machines, which statement is correct?
① Because cooling cold drinks generates heat, that heat is used to heat hot drinks. · ② Use the heat emitted from hot drinks to cool cold drinks. · ③ Hot drinks are not sold in the same machine as cold drinks. · ④ Hot drinks are heated by the heat of the lamp in the machine.
Vending machines for drinking water on the street or in buildings are convenient, but at night no one uses them and the lights are still on, looking like they're wasting electricity.
However, in reality, semi-automatic machines are machines with very advanced energy-saving technology. So what improvements are there?
First of all, with cold drinks, the machine does not cool the entire thing but only the part that is about to be sold. An internal computer tracks sales fluctuations by day of the week and by hour, then cools only the minimum amount needed. Thanks to that, electricity bills are less.
In addition, with machines that sell both cold and hot drinks at the same time, the heat generated when cooling cold drinks is used to warm up hot drinks.
Thanks to many of the above technologies, semi-automatic machines have reduced electricity consumption.
Bạn đã học 25 phút liền rồi đấy!
Đứng dậy vươn vai, nhìn ra xa một lúc, hít thở chậm theo vòng tròn và uống một ngụm nước. Đôi mắt và cái đầu sẽ cảm ơn bạn.
Nghỉ 2 phút · 2:00