根据下面的短文首字母填空
Welcome to our
Mars Shuttle 3! We hope you will have a pleasant j___________ to Mars. The travel will take 3 days and we will land on Mars at around 7.00 a.m. (MT) next Monday.
Now, please look down, you will find a few useful things under your s_________. You can use them during the trip and make it safe and e___________. Now please get familiar with them.
First, you'll see your a___________. It will supply oxygen. Please carry it on your back. And there is a tube(管子) coming out of it. It is used to carry air into your helmet. You will also find a microphone in your helmet, you can talk to your friends or family members on Earth with it.
