— What's your favourite ________?
— It's football.
A：weather
B：book
C：sport
D：number
读句子，选择适当的词组完成句子。
plant trees by hand cut down one by one have to
a little fall asleep fish and chips a few praise...for
下列四个图形中，是中心对称图形的是
下列不属于生命现象的是
