假设你是李华，明年即将进入大学学习，但是不知怎样适应大学的生活。请你就以下大学新生常遇到的情况给北京大学校长写一封信，寻求建议。（1）在生活中不会照料自己（2）感到孤独、经常想家；（3）钱物容易丢失；（4）食物、气候不适应；（5）校外租房现象。
Research found that children who drank mainly soda were more than twice as likely as those who drank no sodasigns of aggression．
| A．showing | B．shown | C．to show | D．show |
I can't remembermade the teacher give Mary the permission to leave the class earlier．
| A．that it was what | B．that was it what |
| C．what was it that | D．what it was that |
On their journey, they meet fellow adults in their 20s and 30slives haven' t lived up to their dreams．
| A．who | B．whose | C．when | D．that |
I'm not a little tired today after giving the room a thorough cleaning and I have never hadtoday．
| A．as tiring a day as | B．as a tiring day |
| C．tiring as a day as | D．day as a tiring as |
—I wonder what makes you a good salesperson．
—Ias a waiter for three years，which contributes a lot to my today's work．
| A．serve | B．have served |
| C．had served | D．served |