Use your head. Nothing taught by others can have the same effect on you as ______learned by yourself．

There is a feeling _____ me______ we’ll never know what a UFO is --- not ever.

　 A. in; that 　 B. on; which  C. for; for which 　 D. by; what

完形填空

　　The western world has always been divided into two types of people——the cool and the uncool. It is a division that __1__ in school. The cool kids are good at __2__. They are __3__ with the opposite sex. They are good-looking and people want to __4__ their style. They can do their homework but they don't make a big effort. That would __5__ be cool.

　　The uncool kids are in the other corner of the playground. They are very bright, but they don't have great. __6__ skills and they are __7__ at sports. When they are not programming computers or doing calculus（微积分）in their heads, they are reading comic books and watching shows like the“X Files”. They are __8__ as the geeks.

　　Here's the news. The geeks are __9__. Make friends with them now or they will put virus in your computer and __10__ your maths homework to ruin. Geeks might not be popular at school, yet they do pass their examinations, and they might not be too popular at university, but __11__ good degrees.

　　The most important __12__ of the 21st century, computers and IT, has been at least partly created by geeks. Geek heroes like Bill Gates __13__ others to follow their example. Being a geek is a way of earning good money. And the creation of the Internet gave them a __14__ of their own to work and play in, making them a global __15__. Besides, the effect of the geeks __16__ popular culture has started a new trend（趋势）. It is now cool to be __17__. Geek culture is becoming an important part of general popular culture, in which what you know is more important than __18__ you look like.

　　But there are also __19__. Geeks were often bullied or laughed at in school. Now a geek may be your boss. Perhaps it is time for __20__.

It was not until dark _______ he found _______ he thought was the correct way to solve the problem.?

A. that; what B. that; that　?

C. when; what D. when; that?