李大爷是糖尿病患者，你给他提供的治疗方案是注射[ ]
A．生长素
B．甲状腺素
C．胰岛素
D．肾上腺素
答案：C
△○○□□□△○○□□□△○○□□□…照这样排下去，第50个图形是______，前50个图形中○共有______个．
Max could smell the rain coming．And it did．Suddenly the lightning flashed through the
clouds, nearly ______ him.
A．to blind
B．blinded
C．blinding
D．having blinded
