2. Read the text and match the highlighted words in the text with their meanings.

(Đọc văn bản và nối các từ được đánh dấu trong văn bản với nghĩa của chúng)

Nowadays humans are still wondering what planets in outer space might support life.

Scientists say planets need to meet three main conditions to support life. Firstly, they must have liquid water, so their temperature must not be too high or too low. Secondly, the planets need to have the correct amount of air so that they can hold an atmosphere around. Finally, their size is also important. If a planet is too small, its gravity is not strong enough to hold an enough amount of air. If it is too big, its gravity will be so strong that it will hold too much air.

Scientists are using space telescopes to find habitable planets. According to them, Mars is one of the most promising planets for life in our solar system. It is a planet like Earth. Its days last for 24.5 hours and its seasons are similar to Earth's. Although scientists have not found actual water on Mars, there seems to be traces of it on the planet's surface. However, the climate on Mars is unsuitable for human life because it is too cold and Mars lacks oxygen to support human life.

Speaking

4. Work in pairs. Tick (v) the boxes to show what conditions a planet needs to support human life.

(Làm việc theo cặp. Đánh dấu (v) vào các ô để cho biết một hành tinh cần có những điều kiện gì để hỗ trợ sự sống của con người)

1. There must be enough liquid water on the planet. [   ]

2. The planet must have craters on its surface. [   ]

3. The planet must hold an atmosphere. [   ]

4. The planet must have at least two moons. [   ]

5. The planet must have enough oxygen in the air. [   ]

Can you add other conditions for a habitable planet?