目前核电站利用的核反应是[ ]

A．裂变，核燃料为铀    

B．聚变，核燃料为铀  

C．裂变，核燃料为氘    

D．聚变，核燃料为氘

---These suitcases are too heavy for me to move.

---Here, I’ll give you a hand _______ them.

A．for

B．to

C．with

D．by