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2) Read the text and choose the best answers.
Earth, our beautiful home planet, is the only astronomica object to accomodate life as we know it. Scientists believe Earth was formed approximately 4.5 billion years ago. It is the fifth-largest planet in our solar system. Its equatorial diameter is about the third-closest planet to the sun. The distance from Earth to the sun is roughly 149,600,000 kometres. It takes 365.3 days for Earth to orbit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58C. Nearty 70 percent of Earth's surface is covered by ocean, which has an average depth of about 4 kilometres. In 2015 it was estimated that 7.3 billion humans are living on Earth.
1. As we know it, Earth is the only planet that accommodates life. It is .............................
A. habitable
B. habitual
C. habitat
2. There are ............................. planets between Earth and the sun.
A. two
B. three
C. four
3. In our solar system, ............................. planets are larger than Earth.
A. two
B. three
C. four
4. The hottest place on Earth may have the temperature of ..............................
A. -88°C
B. 58°C
C. 40°C
5. It takes ............................. for Earth to rotate on its axis.
A. one year
B. one month
C. one day
6. Most of Earth's surface is covered by ..............................
A. ocean
B. mountain
C. forest
ĐÁP ÁN:
| 1. A | 2. A | 3. C | 4. B | 5. C | 6. A |
3) Read the text and do the activities that follow.
a) Put the following words/phrases in the appropriate gaps in the text.
| spacewalks | oxygen | radiation |
| spacecraft | mobility | minus 150 degrees Celsius |
Did you knowthatthe spacesuit astronauts wear while in outer space is formally called ar Extravehicular Mobility Unit, or EMU? ‘Extravehicular’ means outside of a spacecraft, and (1) ‘..........................’ means that the astronaut can move around in the suit, independent of the (2).......................... An EMU is not simply a set of clothes. The suit provides life upport and environmental protection for the astronaut during planetary exploration or (3).......................... For example, spacesuits protect astronauts from extreme temperature change, which can go as cold as (4)......................... , or as hot as 120 degrees Celsius Spacesuits also supply astronauts with (5) ......................... to breathe and water to drink during spacewalks. They protect astronauts against fast-moving space dust particles, (6) ........................., and bright sunlight.
ĐÁP ÁN:
| 1. mobility | 2. spacecraft | 3. spacewalks |
| 4. minus 150 degrees Celsius | 5. oxygen | 6. radiation |
b) Answer the questions.
1. What does EMU stand for?
2. Why is an EMU spacesuit more than a set of dothes?
3. When do astronauts wear an EMU?
4. Give one example of how an EMU provides astronauts with enviromental protection.
5. Give one example of how an EMU provides life support for astronauts.
ĐÁP ÁN:
1. EMU stands for Extravehicular Mobility Unit.
2. An EMU provides astronauts with mobility, life support, and environmental protection.
3. When they are in space doing spacewalks or during planetary exploration.
4. It protects astronauts from extreme temperatures/radiation/space dust particles.
5. It supplies astronauts with oxygen/water.
