完形填空。 The moon travels around the earth. It is our satellite. Man 1 it already. So far no man has traveled 2 than the moon, but spaceships without people 3 other parts of the universe. Many countries have sent man-made satellite into space. These satellites go round the earth and help us 4 more about the earth, the weather and 5 things. Most countries use these satellites to send and receive 6 . For example,with their help, China can send its TV and radio programs to the other parts of the world. We can also use 7 to help us make telephone calls to foreign countries. Our knowledge of the universe 8 all the time. Our knowledge grows and the universe develops. Because of space satellites the world 9 is becoming much 10 and people from different countries now can understand each other better. (     )1．A．visited (     )2．A．farther (     )3．A．have watched (     )4．A．see (     )5．A．else (     )6．A．news (     )7．A．satellites (     )8．A．have grown (     )9．A．themselves (     )10．A．small B．is visiting B．smaller B．have shown B．learn B．the other B．messages B．programs B．are growing B．himself B．smaller C．will visit C．bigger C．have reached C．study C．other C．letters C．radios C．grew C．itself C．beautiful D．has visited D．closer D．have found D．think D．others D．languages D．spaceships D．is growing D．herself D．more beautiful