Although metals________widely in qualities such as strength and hardness, they all have certain qualities
in________.[ ]
A. vary; general
B. differ; common
C. react; particular
D. refer; detail
答案:B
Although metals________widely in qualities such as strength and hardness, they all have certain qualities
in________.[ ]
A. vary; general
B. differ; common
C. react; particular
D. refer; detail
答案:B