题目

    The giant panda 61  (love) by people throughout the world. Chinese scientists 62  (recent) had a chance to study a wild female panda with a newborn baby. She was a very 63  (care)mother. For 25days, she never left her baby, not even to find something 64  (eat)! She would not let any other pandas come near. She licked the baby constantly to keep it clean. Any smell might attract dangerous 65  (animal) that would try to eat the little comforting pats. The mother held the baby in her front paws much the way a human does.  66  it cried, she rocked it back and forth and gave 对H2O的电离平衡不产生影响的粒子是            A．         B．?         C．26M3+             D．