13．假如你是李华。去年夏天，你在一家国际中学生夏令营帮忙，收获颇多。今年，你想邀请你的好友Jane一起为夏令营工作。请你根据该夏令营的招聘广告及所给内容要点写一封信，说服Jane和你一同参加。开头已为你写好。（字数120词左右）
My morning ______ includes jogging in the park and reading newspapers over breakfast.
| A．drill | B．action | C．regulation | D．routine |
Since Tom ______ downloaded a virus into his computer, he can not open the file now.
| A．readily | B．horribly | C．accidentally | D．irregularly |
At minus 130℃, a living cell can be ______ for a thousand years.
| A．spared | B．protected | C．preserved | D．developed |
The traditional view is ______ we sleep because our brain is “programmed” to make us do so.
| A．when | B．why | C．whether | D．that |
______ he referred to in his article was unknown to the general reader.
| A．That | B．What | C．Whether | D．Where |