按离子极化概念,稀有气体型的离子的极化力是最弱的。
A. 对
B. 错
______ broke her leg while skiing.
A. She
B. Her
C. Hers
Both his parents and teacher ____ proud of _____.
A. are; he
B. are; him
C. is; him
D. is; his
The population in Shanghai is larger than _____ in Guangzhou.
A. the population
B. that
C. those
D. it