六年级英语题...急急..帮帮忙.

六年级英语题...急急..帮帮忙.
完形填空.
It was July,1976.An unmanned spaceship,Viking One ,Had arrived at Mars .On July 20th,the spaceship __1__ .Part of it donitnued toward a landing on the planet.It fell ___2___ through the laate afternoon Mars’sky.
Forty kilomtetrs above the planet ,the thin __3__ began to slow its fall.Six kolometers above the planet,a big parachute opened .The landing craft fell more slowly.Then,three rocket engines __4__ .And the landing craft set down__5__ on the surface.
___6__ in the Viking One Lander immediately sent a message to the earth.It said,”I am here.I am down safely.I am beginning my work.”
The message __7__ at the speed of light.It took twenty minutes to reach the earth,more than three hundred twenty million kilometers ___8__.Scientists and engineers __9__the control center ___10___
( )1.A.separated B.appeared C.worked D.started.
( )2.A.correctly B.slowly C.quickly D.directly
( )3..A.atmosphere B.universe C.space D.air
( )4.A.fired B.fell C.opended D.floated
( )5.A.heavily B.safely C.suddenly D.immediately
( )6.A.coputer B.A rocket C.A pilot D.An astronaut
( )7.A.spread B.travelled C.shot D.moved
( )8.A.far B.long C.distant D.away
( )9.A.in B.for C.at D.on
( )10.A.shouted B.watched C.cheered D.welomed