以下烃中，一氯代物有两种的是

A．乙烷

B．异丁烷

C．新戊烷

D．苯

A client undergoes a total hip replacement. Which statement made by the client would indicate to the nurse that the client requires further teaching（）

A. "I’ll need to keep several pillows between my legs at night. "
B. "I need to remember not to cross my legs. It’s such a habit. "
C. "The occupational therapist is showing me how to use a ’sock puller’ to help me get dressed. "
D. "I don’t know if I’ll be able to get off that low toilet seat at home by myself. "