阅读下面的短文,在空白处填入1个适当的单词或括号内单词的正确形式。In June,China's last satellite of its BeiDou Navigation Satellite System(BDS)was launched into orbit,marking the completion of the whole system.
In ancient China,people used the Big Dipper,【小题1】is known in Chinese as"beidou qixing," to navigate.China's navigation satellite system【小题2】(name)after"Beidou”,which carries the meaning of"pointing out the right direction."China started constructing the BeiDou Navigation Satellite Experimental System(BDS-1)back in 1994,and now it consists of 55 satellites and can provide services worldwide.
【小题3】(compare)with other satellite navigation systems,the BDS operates more satellites in high orbit,and transmits navigation signals at more frequencies.These features enable better more accurate services.Apart 【小题4】 navigation,the BDS also provides diverse services,such as short message communication,and free international search and rescue 【小题5】(assist).The BDS has been applied in transportation,agriculture and other traditional fields.
As 【小题6】 open system featuring shared benefits,the BDS has been seeking to serve a 【小题7】(wide)range of countries and international organizations.BDS-related 【小题8】(product),as is reported,are now being used in more than 120 countries and regions.Projects based on the BDS for precision farming,smart port construction and digital construction have been carried out in many countries across Asia,Europe and Africa.China is also 【小题9】(active)communicating with Russia and European countries 【小题10】(improve)the compatibility of the BDS so that it can better serve its global users.