下列现象，由地球公转引起的是  

A．日月星辰东升西落

B．各地的昼夜交替现象

C．一年中，学校操场上旗杆影子的长短和方向随季节发生变化

D．株洲球迷上午9：00观看美国当地时间20：00举行的NBA篮球赛

根据句意及汉语意思完成句子。

1．Peter is an________（积极的）boy. He takes part in many activities.

2．My grandfather likes _________（木制的）bed because he thinks it's so comfortable.

3．Many young people_________（梦想）of becoming famous basketball players.

4．Do you know what the________（目标）of basketball is?

5．Charles is a careless boy. He often________（犯错误）in his homework.