下列行为中具有法律意识的是

A．小李被同学勒索后不敢报警

B．小花劝妈妈推电动车过斑马线

C．小林经常欺负低年级的同学

D．明明经常给同学起难听的绰号

(2013·高考浙江卷)There are some health problems that，when ________ in time，can become bigger ones later on.

A．not treated

B．not being treated

C．not to be treated

D．not having been treated