🔁 1. Ôn tập – 10 phút
🔁 Ôn thẻ từ vựng đến hạn
🧠 Nhớ lại buổi trước (không xem tài liệu)
- “the latter” – nói 1 câu.
- T/F/NG band 6.5 (buổi 2): “ngụ ý rất rõ” khác “không nói” thế nào?
- Summary không hộp từ: kiểm tra 3 điều gì?
Trả lời to hoặc viết ra giấy, rồi mới mở lại buổi trước để kiểm tra.
📖 2. Đầu vào – 20 phút
Farming upwards
(Bài đọc tự viết; công ty, nhân vật và số liệu là giả định.)
A In a converted warehouse on the edge of a large city, rows of lettuce and herbs grow on shelves stacked ten levels high. There is no soil and no sunlight; instead, the plants receive nutrients through water and light from LED lamps. This is vertical farming, a method that its supporters believe could transform the way cities are fed.
B The company behind the farm, GreenStack, claims that its system uses far less water than conventional agriculture, because water is recycled within a closed system. It also says that its crops require no pesticides, since insects cannot easily enter the sealed growing rooms. Because the farm is located close to supermarkets, produce can be delivered within hours of being harvested, reducing food miles and extending its shelf life.
C Independent experts accept some of these advantages but are more cautious about others. Dr Yusuf Adeyemi, an agricultural scientist who has visited several vertical farms, agrees that controlled environments can reduce water use and protect crops from pests. However, he points out that the systems are highly energy-intensive. LED lighting and climate control run day and night, and unless the electricity comes from renewable sources, the environmental benefits may be smaller than they first appear.
D Cost is another obstacle. Building a vertical farm requires a large initial investment, and running costs remain high. As a result, most vertical farms currently grow only fast-growing, high-value crops such as salad leaves, herbs and strawberries. Staple crops like rice, wheat and potatoes, which provide most of the world’s calories, need far more space and light and are not considered economically viable in vertical systems at present.
E Supporters argue that the technology is still young and that costs are falling as lighting becomes more efficient. Some also see vertical farms as a way to secure fresh food supplies in places with poor soil or extreme weather. Adeyemi believes they will play a useful but limited role. “They won’t replace traditional farms,” he says, “but they could become one part of a more resilient food system, particularly for cities.”
✅ Câu 1–6: TRUE, FALSE hoặc NOT GIVEN?
1. The plants in the warehouse are grown without soil.
2. GreenStack claims its crops need no pesticides.
3. Vertical farms use less energy than conventional farms.
4. Dr Adeyemi rejects all of the company's claims.
5. GreenStack's electricity comes entirely from renewable sources.
6. Rice is currently grown profitably in many vertical farms.
Câu 7–11: Complete the summary. ONE WORD ONLY from the passage.
- Vertical farms are expensive to build and have high running .
- For this reason, they mainly grow high-value crops such as salad leaves, herbs and .
- Staple crops need much more space and , so they are not yet viable.
- Supporters say costs are falling as becomes more efficient.
- Dr Adeyemi thinks vertical farms could help create a more food system.
🧩 3. Ngôn ngữ trọng tâm – 10 phút: tuyên bố vs bằng chứng
| Kiểu câu | Ví dụ trong bài | Mức chắc chắn |
|---|---|---|
| Tuyên bố của công ty | GreenStack claims that… / It also says that… | chưa kiểm chứng |
| Chuyên gia đồng ý | Experts accept / Adeyemi agrees that… | được xác nhận một phần |
| Chuyên gia lưu ý | However, he points out that… | phản biện |
| Điều kiện | unless the electricity comes from… | lợi ích có điều kiện |
| Dự đoán | they could become… | khả năng |
✍️ 4. Thực hành – 25 phút
- Tô 2 màu: tuyên bố của công ty và ý kiến độc lập (10 phút).
- Viết 2 câu T/F/NG khiến người làm dễ nhầm giữa tuyên bố và sự thật (10 phút).
- Nói 1 phút: bạn có mua rau từ trang trại thẳng đứng không? Vì sao? (5 phút).
💼 Dùng ngay – đọc nhãn thực phẩm (thêm 5–10 phút)
Fresh chicken salad – 250 g (nhãn giả định)
Use by: 28 Oct · Keep refrigerated (0–5°C) Ingredients: chicken (40%), lettuce, egg, mustard, sunflower oil, wheat croutons Allergens: see ingredients in bold. May contain traces of nuts.
Crackers – 200 g: Best before: 15 Jan · Store in a cool, dry place.
✅ Hiểu nhãn thực phẩm
Which label is about safety, so you should not eat the food after the date?
Your colleague is allergic to nuts. Is the salad completely safe for her?
Which TWO allergens are listed as ingredients in the salad?
Chọn 2 đáp án.
📚 Từ vựng của buổi
- vertical farming – nông nghiệp thẳng đứng
Vertical farming uses stacked shelves.
- controlled environment – môi trường được kiểm soát
Plants grow in a controlled environment.
- LED lighting – đèn LED
LED lighting replaces sunlight.
- pesticide – thuốc trừ sâu
No pesticides are used.
- crop – cây trồng, vụ mùa
Rice is a staple crop.
- energy-intensive – tốn nhiều năng lượng
The system is energy-intensive.
- food miles – quãng đường vận chuyển thực phẩm
Local farms reduce food miles.
- shelf life – thời hạn sử dụng (trên kệ)
Fresh produce has a short shelf life.
- allergen – chất gây dị ứng
Allergens are shown in bold.
- best before – nên dùng trước (chất lượng tốt nhất)
Check the best before date.
✅ 5. Tự kiểm tra – 10 phút
✅ Tự kiểm tra
Nghe lại bản ghi của mình và tích những điểm bạn đã làm được. Ô tích chỉ lưu trên máy này.