学生的科学行为、习惯是获得科学知识的必要条件。()
查看答案
The room as a laboratory for nearly two years till now.
A. is used
B. was used
C. has been used
D. had been used
James had never seen Brando again, was really a pity.
A. who
B. what
C. which
D. where
firework中进行网页布局的原理可以说就是利用层进行不同区域和对象的设置。()