1 . 假定你是李华,目前正在英国某国际高中交换学习学校环保社最近正在招募新成员,请你给社团负责人 Mark 写一封电子邮件，内容包括：
(1)申请加入社团；
(2)简要介绍自己；
(3)期待回复。
注意:写作词数应为不少于 100；开头结尾已经给出。
参考词汇：招募 recruit 环保社：Environmental Club Dear Mark,

I’m Li Hua,

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours sincerely,

Li Hua

2 . _______ on the moon's far side is extremely challenging.

A．Landed

B．Landing

C．Having landed

D．Being landed