[填空题]In light therapy, you just sit near a special lamp for _______________ every morning.

[填空题]In light therapy, you just sit near a special lamp for _______________ every morning.

[填空题]You should wait here before you sit down.

[填空题]Why don’t you sit and smoke as long as you can afford to hire other people to play baseball for you and __________________________

[填空题]You sit down and have a meal there.

[填空题]By the time you sit for the examination next month, you (complete) ______ the course.

[简答题]The next time you sit down with your own family to eat, please take a moment to imagine the smell of smoke, feel it in your lungs, see the soot building up on the walls, and then come find us at the Global Alliance for Clean Cookstoves. Hearths, whatever they look like, and wherever we gather around them, where we tell our stories and pass down our values, bind families together. And the benefits from this initiative will be cleaner and safer homes, and that will, in turn, ripple out for healthier families, stronger communities, and more stable societies. So we are excited because we think this is actually a problem we can solve.

[填空题]you can sit on it.

[单项选择]Because of the great speed of light, we see a lamp light up almost at the exact moment （）.
A. we turn it on
B. when we turn on it
C. that we turn on it
D. which we turn it on

[单项选择]Just when you thought you knew a computer virus or worm when you saw one, several new infections that may fool you are gaining momentum on the Internet. Most e-mail viruses require the victim to double-click open an infected attachment before they can wreak their havoc. But Badtrans-B and Atiz, two worms that were spreading quickly over the weekend and Monday, can launch themselves automatically when the recipient views or even just clicks on the subject line of an infected e-mail message using Microsoft’s Outlook and Outlook Express programs. October’s Nimda virus used a similar technique, which helped it spread further and faster than it otherwise might have. Computer users were safe from viruses as long as they didn’t download programs from the Internet or open e-mail attachments. But these days, viruses are as capable of getting into computers as Santa Claus is at getting down chimneys. Antivirus software maker McAfee, a division of Santa Clara, Calif.’s Network Associates,
A. an anti-virus program
B. an expert on viruses
C. an anti-virus company
D. a new virus found