According to the rules, students must not ____ their books during examinations.

A．read

B．watch

C．notice

D．look at

患者男，19岁，因“颈部肿物2年余”来诊。查体：T36.7℃，P88次/min，右侧颈部可触及3个约2cm×3cm串珠样质韧肿物。

为进一步明确诊断，考虑做的检查是（）

A.肿物活检或细针穿刺病理检查

B.颈部X线片

C.颈部CT

D.颈部MRI

E.颈部肿物B型超声