You might have heard of collisions between cars,trains and ships,but satellites?It sounds like something from a movie!But sometimes life can be 1 than the movies.On February 11,a Russian military satellite,Kosmos 2251,smashed into a US communications satellite about 780km above Siberia in Russia.The 2 made more than 500 pieces of debris.
The debris could be very 3 for nearby spacecraft,even a tiny piece could do great harm.The accident occurred in an orbit which many satellites and other spacecraft 4.It means that some countries may have to 5 their spacecraft into different orbits.It is the first satellite crash that has been made 6.People are worried,since they understand how 7 Earth’s orbit has become in recent years.Before the accident,there were already over 300,000 objects 8 the Earth.There are satellites (old and new),spacecraft,and 9 objects.The US and Russia have put the 10 number of objects in space.Both countries are calling on cutting space junk.They are asking for international cooperation to help solve the problem.
1.A.worse B.stranger C.harder D.better
2.A.accident B.satellite C.spacecraft D.area
3.A.important B.interesting C.dangerous D.difficult
4.A.use B.produce C.prepare D.share
5.A.move B.make C.reduce D.fix
6.A.famous B.public C.successful D.rapid
7.A.crowded B.excited C.developed D.touched
8.A.pulling B.circling C.joining D.pushing
9.A.another B.others C.other D.the other
10.A.largest B.small C.same D.bigger