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China Mobile, the country's largest mobile communication operator, has accounted for nearly 40 percent of taxes in the domestic telecom market. That puts it at the top of the six major telecom operators in the nation, according to the latest official statistics.

The other five are: China Telecom, 31.1 percent; China Netcom, 16.6 percent; China Unicom, 13.4 percent; China Satellite Communications Corp and China Railcom, 1.5 percent.

Mobile communications and the IP phone business have gradually replaced traditional long-distance calls. Mobile communications account for 28.5 percent of the total long-distance communications business. IP phones have 41.4 percent, while traditional long-distance calls are down to 30.1 percent.

In another ranking, Nokia, Motorola, Bird, TCL and Siemens came in as the top five mobile phone sellers in China in the first half of this year, according to South Daily. The report also says that during this period, China produced 82 million handsets. (手機) (including GSM, GPRS and CDMA phones) and sold 80 million. Of the phones sold, 37 million were exported to other countries.

Analysts point out that China's lack of core technologies and its heavy reliance on overseas technologies have proved to be an obstacle for development of domestic phone makers.

( ) 1. We know from the passage that________ .

　　　 A. Nokia is a very popular phone seller

　　　 B. China produced and sold most of the world's mobile phones

　　　 C. Mobile communications have replaced long-distance communications

　　　 D. China has had quite advanced core technologies

( ) 2. Nowadays, mobile communications have gradually taken the place of________ .

　　　 A. traditional telephones　　 B. telecom operators

　　　 C. IP phone service　　　　　 D. traditional long-distance calls

( ) 3. The underlined word "obstacle" means________ .

　　　 A. problem　　　 B. puzzle　　　　 C. difficulty　　　 D. factor