1.   A riot policeman was killed in the capital when hooded students threw a home-made explosive during running battles outside the National University.

2.   In this high-tech age, the notion that so many students would throw themselves into something so decidedly un-techy is perhaps contrary.

3.   Into the debate students throw challenges to classical theories of linear time, references to theories on cosmic wormholes -- even critiques of camera angles that shape audience perception.

4.   Other students were throwing wet toilet paper out the windows and screaming.

5.   Some broke ranks to hurl back rocks that the students had thrown at them.

6.   So Chinese students throw rocks at the U.S. embassy while preparing to take the national English exams to get into a U.S. university.

7.   Students threw books out the window.

8.   Students threw stones and acid at the police, breaking the collarbone of one officer and slightly burning another.

9.   The cameras and assigned seats will decrease incidents in which students throw things from open bus windows or move from seat to seat, Williams said.

10.   They fired tear gas canisters at the protesters, but the students threw the gas cans back at the troops.