题目内容：

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

1000 Hours a Year

Like you, all my email goes into my Sent Mailbox, just sitting there if I want to check back at what I said to whom years ago. So what a surprise to see that I send approximately 18, 250 emails each year (roughly 50 a day). Assuming 3 minutes per email, that’s about 1000 hours a year on email alone. I’ve been on email since the early 90s. ___1.___

The answer is both yes and no. Yes, I have been able to keep in touch with family, friends, and colleagues in far-away corners of the planet with ease. _2.__ But while these undoubted benefits are the reasons why I continue to email, it is not without its own cost. Most importantly, as the above analysis shows, email eats my time just as it likely eats yours.

__3._ Each time a message arrives there’s just the chance that it might contain something exciting, something new, something special, a new opportunity. __4.___ That’s just enough to keep me checking my Inbox. But that means perhaps only 10 of the 1000 hours I spent on emails this year were actually wanted.

Frequent email messages will certainly affect our real work. ___5.___ Like other potential addictions we should perhaps attempt to check the email box at certain times of the day, or by creating email-free zones by turning off Wi-Fi. Now I need to think whether I really want to be spending 1000 hours a year on email, at the expense of more valuable activities.

A. Was that time well spent?

B. All this feeds my continued use of email.

C. Do you spend 1000 hours on emails every year?

D. And we all recognize that email has its addictive side.

E. Email uses technology to communicate a digital message over the Internet.

F. Maybe one in 100 emails contain something I really want to know or hear about.

G. Becoming aware of what email is doing to our allocation of time is the first step to re-gaining control.