A:
B:
C:
D:
看图读句子,连线。
① ____ A. -An ice cream for you, Tim. Thank you.
② ____ B. -Happy New Year! -Happy New Year!
③ ____ C. - A gift for you, Tom. Thank you, John.
④ ____ D. -I like firecrackers. - Me too(我也是).
⑤ ____ E. -I like this dress, Mum. It's nice.
下列对动物细胞培养的有关叙述正确的是( )
手敲击桌面,可以听到声音,但并不看见桌面在振动,说明桌面发声时不振动。( )
下列物质的用途中,利用其化学性质的是( )