据报道，上海某医院正在研究用放射性的碘治疗肿瘤。该原子的原子核内中子数与核外电子数之差为[ ]
A．72
B．19
C．53
D．125
答案：B
用所给词的适当形式填空。
1. The man plays sports every day. So he looks ______ (athlete).
2. Deng Yaping started ______ (play) table tennis in 1978.
3. —Where ______ you______ (live) two years ago?
—We______ (live) in Japan.
4. He spent one hour ______ (read) the story book.
5. They______ (tour) the USA when they studied at school.
6. He can play the piano, the ______ (violinist) and some other musical instruments.
一呼衰患者，经治疗后好转，2小时前出现兴奋躁动，血气分析结果：PaO252mrnHg，PaC0260mmHg，pH7.49，BE+19rmnol/L．K+2.4mmol/L，Cl-76mmoL/L。应该采用何种治疗( )
A．加大利尿剂B．吸氧C．给予镇静剂D．补氯化钾E．补碱性药物
治疗肿瘤。该原子的原子核内中子数与核外电子数之差为[ ]
治疗肿瘤。该原子的原子核内中子数与核外电子数之差为[ ]