1. Look at the photos and choose the correct option. Then fill in the gaps (1-4).

(Nhìn vào bức tranh và chọn đáp án đúng. Sau đó điền vào các chỗ trống (1-4).)

Pronunciation (Phát âm)

Vowel review (Ôn tập về nguyên âm)

2. Choose the word that has the underlined part pronounced differently from the others.

(Chọn từ có phần phát âm khác với các từ còn lại.)

1. A. talk                     B. make                       C. wave                       D. waste

2. A. ocean                  B. ozone                      C. homeland                D. power

3. A. petrol                  B. problem                  C. fossil                       D. product

4. A. silent                   B. tidal                        C. windy                     D. mighty 

3. Read the text. Choose the option (A, B, C or D) that best fits each gap (1-5).

BIOMASS FUEL AND TIDAL ENERGY

Biomass is material that comes from trees, recycled paper, animal waste, food waste and some crops, such as corn, soy and sugar cane. In other words, most kinds of produce waste can be converted to biomass fuel.

The biomass is dried and then burnt as biomass fuel to create heat or generate electricity. Biomass fuel is easy 1) _____ for use when we need it. However, burning biomass produces carbon dioxide, a greenhouse gas, so it is not completely environmentally friendly. The good news is that biomass fuel is carbon neutral 2) _____ it only releases the same amount of carbon into the atmosphere as the plants, the source of biomass fuel, absorb in their life cycle. We can also make biofuel from biomass and use it to power vehicles.

Biofuel produces 3) _____ emissions than regular petrol. To illustrate, E5 petrol contains 95% of normal petrol and 5% of ethanol, a kind of biofuel; E5 really helps reduce the carbon emission from traffic. However, growing crops for biomass fuel uses a lot of land and is only renewable if we replant trees.

Tidal energy involves converting the energy of the waves in large bodies of water such as seas, oceans and lakes 4) _____ electricity. We can harness this kind of energy by installing large turbines on the seabed or below the sea surface. Similar 5) _____ hydroelectricity, continuous ocean currents can turn huge turbines and generate electricity. Tidal power doesn't produce any greenhouse gases, and it is a highly efficient form of energy because it can produce electricity continuously at all times of the year. However, tidal power hasn't been popular yet because it requires huge investments, effective management and regular maintenance.

1. A. store                    B. storing                    C. to store                    D. to storing

2. A. because               B. so                            C. but                          D. although

3. A. less                     B. fewer                      C. few                         D. little

4. A. into                     B. from                        C. in                            D. with

5. A. in                        B. to                            C. with                        D. as

4. Read the text again and decide if each of the statements (1-5) is T (true), F (false).

(Đọc lại bài khóa và quyết định xem mỗi phát biểu dưới đây (1-5) là đúng hay sai.)

1. Humans can create biomass fuel from only plants.

2. Motorbikes and cars can run on biofuel.

3. Biofuel is not completely green.

4. Tidal energy creates electricity from the turbines near the sea.

5. Tidal energy is highly efficient, and it has wide popularity.

Vocabulary (Từ vựng)

Advantages of renewable energy (Lợi ích của năng lượng tái tạo)

5. Match the words in the two columns.

(Nối các từ trong hai cột.)

6. Fill in each gap with affordable, permanent, harness, abundant, dependence or maintenance.

(Điền vào mỗi chỗ trống với affordable, permanent, harness, abundant, dependence or maintenance.)

A: Hi, Mike! I'm attending a seminar on green energy sources. Are you interested in joining me?

B: Sure! The power of the sun and the wind is 1) _____ in Asia. I'd love to find out how we can develop new technology.

A: Lots of Asian nations can develop renewable energy effectively, especially in sunny or windy areas. We must 2) _____ electricity potential in nature and reduce our 3) _____ on fossil fuels soon.

B: Do green energy sources have high 4) _____ costs?

A: I'm sure the seminar will give you all the answers.

B: Well, the new technology should be more 5) _____ to install to ensure our future sustainable development.

A: Absolutely! It's vital to take advantage of 6) _____ free sources of energy like the wind and the sun.

7. Choose the correct option.

(Chọn đáp án đúng.)

1. Is wind power _____ to the ecosystem?

A. impact                    B. impacted                 C. impactful

2. Energy prices will become more _____ in the future.

A. predicted                B. predicting               C. predictable

3. Unfortunately, we are heavily dependent on _____ fuels.

A. imported                 B. importing                C. importation

4. We need more _____ sources.

A. consistent               B. consisted                 C. consisting

5. Is the _____ of turbines costly?

A. installed                  B. install                      C. installation

6. Fossil fuels run the risk of _____ in the near future.

A. depletion                B. deplete                    C. depleted

7. There are quite a lot of _____ in the atmosphere.

A. pollute                    B. pollutants                C. polluting

8. A _____ of energy costs will boost the economy.

A. reduced                   B. reducing                 C. reduction 

8. Fill in each gap with the correct word from the list.

• imported • consistent • impactful • depletion • pollutants • predictable • reduction • installation

1. Fewer _____ fuels would mean more energy independence.

2. Are these sources reliable and _____?

3. Solar power is not _____ to the environment.

4. Wind and solar power will never suffer from _____.

5 Factories emit harmful _____ into the air.

6. The future energy prices are not _____.

7. These turbines are silent and space-saving, and offer a huge _____ in costs.

8. Our company specialises in the manufacturing and _____ of solar panels.