根据短文判断正 （T）误 （F）。

     This is a picture of Mr Black's family. There are four people in the family. They are Mr Black,

Mrs Black, Jim and Kate. Look at the picture. We can see Jim is behind Mr Black. Kate is behind

Mrs Black. Jim and Kate are students. They go to the same school. Mr Black and Mrs Black are

teachers. They are good teachers. They go to work by car.

( ) 1. Jim is Mr Green's son.                      

( ) 2. There are five people in Mr Black's family.

( ) 3. Jim and Kate are students.                  

( ) 4. Jim and Kate are in the same school.        

( ) 5. Mr and Mrs Black go to work by bus.        

16岁女孩，左小腿上段肿胀疼痛半年，近1个月来肿胀明显，夜间痛明显。查体：左胫骨上端肿胀严重，压痛明显，浅静脉怒张，扪及一6cm×7cm硬性肿块，固定，边界不清。X线片示左胫骨上段呈虫蚀状溶骨性破坏，骨膜反应明显，可见Codman三角。

在住院手术治疗前，应常规行下列哪项检查

A．淋巴结活检

B．头颅CT

C．胃肠道钡剂检查

D．胸部X线片

E．骨髓穿刺