血虚作痒的主要症状是（）

A.浸淫四窜，黄水淋漓

B.走窜四注，遍体作痒

C.皮肤干燥，脱屑作痒

D.焮红作痒，不会传染

E.瘙痒剧烈，最易传染

Passage Two

Why are the prices of mobile telephone services lower in China’s eastern coastal region

A．The average disposable income is lower in the region.

B．The GDP is higher in the region.

C．The costs of operators are lower due to a greater number of users of mobile phone services in the region.

D．The operators compete with each other in order to win over subscribers.