阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1、3、7、9段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。
Integrating All Communications 1．Have
you ever felt frustrated when you have to contact your friends, but cannot reach
them even you’ve tried to call to their mobile phones, pager and telephone You
may have to try again and again to reach them through other means such as the
Internet or ICQ chat lines until you find where they are. 2．But
never fear, the future will bring this running around to an end, an executive
with Lucent Technologies says. 3．"If you contact your friend
through a traditional telephone, but you find no one there, the network will
automatically search for other communication means until your friend is
available and connects you, maybe through his mobile phone or instant message
account," Robert Cohen, Lucent’s global product marketing director,
said. 4．The integration of different communication networks will
make this possible, he said. The integrated telecommunication network is
expected to be the next big thing in the next couple of years.
5．Future networks will be developed to be multi-service networks that can
support all kinds of communication methods and provide multiple communication
services to users. Users would be able to communicate with one another across
the different devices with a variety of multimedia contents such as voice, data
and video. 6．"It’s the next generation network," Cohen said.
"It’s to combine fixed-line telephone, wireless communication, cable as well as
the Internet under the same network, and allow communication to be done across
different communication technologies." 7．Adoption of the
integrated technologies will help lay the foundation for the "single number"
concept. Instead of having several contact numbers used for several kinds of
devices, people will be assigned one number, and this number will be used to
allow their friends to contact them through E-mail, mobile phone, pager, instant
message or other kinds of devices. "With just one number your friends will be
able to contact you through all communication methods as the number will
associate with each individual’s communication device connected to the network,
"Cohen said. 8．To usher the industry in the future, Lucent has
introduced what is called SoftSwitch technology to be the brain for the "next
generation" network. SoftSwitch allows telecom operators to integrate different
kinds of communication networks, even old circuit-based networks or the new
"packet" networks. 9．The technology also allows operators to
create enhanced communication services on their existing network infrastructure,
helping them to take a shorter time for new service delivery It is not so convenient to use only______