---Would you please tell us something about the Group of Eight(G8)?

---Well, G8 is an international organization________the richest countries in the world, five of which are quite small and two of which are island states.

A．is consisted of

B．consisting of

C．consists of

D．consisted of

颈部特殊体检中，“由于颈肋压迫了锁骨下动脉，阻断了相应上肢的供血，因此造成桡动脉搏动力量减弱或消失”的是（）

A.直尺试验（Hamilton征）

B.展臂快速伸屈手指试验

C.肩三角试验

D.深呼吸试验（Adson试验）

E.肩内收试验（Dugas征，或搭肩试验）