社会工作者在与服务对象接触和初步面谈后，双方要决定下一步需要采取的步骤。如果发现服务对象对问题的看法和期望与社会工作者所能提供的服务不相符，则要( )。

A．终结服务

B．转介其他机构

C．进行沟通

D．进入下一个助人阶段

Long-Term Evolution (LTE) is a technological standard for wireless mobile broadband networks. LTE will make the use of the latest technologies. Orthogonal ______ Division Multiple Access ( a technology well suited to achieving high peak data rates in high-spectrum bandwidths) will be used on the downlink. On the uplink, LTE will use ______ Carrier Frequency Division Multiple Access, which offers advantages in power ______ and terminal battery life as compared to technologies used today. The latest antenna technologies will also be used, such as ______ , which employs multiple transmit and receive antennas. This results in numerous data paths effectively operating in ______ and-through appropriate coding/decoding-significant throughput gains.

A. Phase modulation B. Amplitude modulation
C. Single D. Duplex