Today, most people live on __________.

• Earth

• Mars

• Venus

__________ is often called "the Red Planet". It's the 4th planet from the sun.

• Earth

• Mars

• Venus

You can recognize ____________ by its yellow clouds. It's the 2nd planet from the sun.

• Earth

• Mars

• Venus

You will be very cold in space because the ________ is very low.

• temperature

• gravity

• oxygen

• space station

_________ pulls us down to the ground.

• temperature

• gravity

• oxygen

• space station

Many scientists want to work on a _________________ because it has a great view of the stars.

• temperature

• gravity

• oxygen

• space station

Humans can't live on some planets because they don't have enough __________ to breathe.

• temperature

• gravity

• oxygen

• space station

Tôi muốn đi tham quan trạm vũ trụ

• a

• space station

• to visit

• I'd

• like

Tôi muốn sống trên sao Kim

• prefer

• on

• to live

• I'd

• Venus

Bởi vì trọng lực của nó tương tự với Trái Đất

• Earth's

• is

• its gravity

• Because

• similar to