On April 20，SpaceX launched（發(fā)射） the first test flight of its Starship.The rocket is 120 meters tall and had 33 engines （引擎）.It is the world's（1）

largest

largest

（large）and most powerful rocket that has ever been built.No one was on board. "I'm not sure whether it（2）

will get

will get

（get） into orbit （軌道），"Space X founder（創(chuàng)建者）and CEO Elon Musk said in March of the planned launch， "But I am sure（3）

of/about

of/about

its excitement."
   As it turned out，Starship did not enter orbit.The rocket（4）

was expected

was expected

（expect） to make a 90-minute trip around the Earth.Then，it would land in the ocean near Hawaii.But just three minutes after take-off，the huge rocket began to turn around（5）

quickly

quickly

（quick）.Soon afterwards，it exploded （爆炸） into a ball of fire.It was later shown that the spacecraft failed（6）

to separate

to separate

（separate） from its booster（助推器）after leaving the ground.
   Even so，this flight was of much（7）

value

value

（valuable）to Space X."The farther we fly，the more data（數據）we collect，"said Space x engineering manager Kate Tice，"In some ways，it is（8）

a

a

success."
Space X will work with local officials to get back the rocket debris （殘?。?This will help them find out what went wrong and fix the problem.Musk believes that the team will be able to make another test flight within a few（9）

months

months

（month）.
Space X can make spaceflight a profitable （盈利的） business（10）

because/since/as

because/since/as

its rockets are designed to be reused.This will make it less expensive to send everything from people to satellites （人造衛(wèi)星） into space.