根据首字母和汉语提示完成单词。

1. The woman has studied English s______1990.?

2. —Have you heard a______   Lei Feng?

   —Yes, of course.?

3.The plane has a______   in Tianjin already?

4. In fact, since 1989 ______ (工程)Hope has built schools all over China.?

5. How long has Lingling ______ (认识)Sally?

下列除哪项外均有助于股肿诊断：（）

A.急性期白细胞总数升高

B.胸部X线摄片

C.静脉血流图

D.超声多普勒

E.静脉造影