美国有线新闻 CNN 2013-05-06

 A conservation cleanup project and an accidentalscholarship offer. That's coming up this Thursday on CNN student news. But ourfirst story involved the civil war in Syria. U.S. officials say they haveevidence that chemical weapons have been used in Syria. They don't know howthey were used, when they were used or which side used them. President Obamasays those details need to be sorted out.

 
The use of chemical weapons would be a gamechanger. That's not simply for the United States but for internationalcommunity we got to everything we can investigate and establish some certaintywhat exactly has happened in Syria, what is happening in Syria. When I ammaking decisions about America's national security and potential for takingadditional action in response to chemical weapons use. I've got make sure I gotfacts.
 
Chemical weapons can deploy 1 any number ofway they can be introduced into food or water, they can be spread fromairplanes can even be launched as artillery 2 shells. For example, this liquid poisonwould be blasted off, it would hit the ground as the liquid spread out it willturn into a gas that would simple affect everything in the region. That's theybelieve happen in several towns here in Syria. But here's insidious 3 thing ifthey are really talking about sarin gas, it is colorless, it is odorless and ithas not test for people who are under attack would not even know it washappening to them. But they might have the symptoms because they could come onalmost immediately remember, this was developed as a pesticide 4 and this is whatdoes to human to cause blurred 5 vision, rapid breathing, heavy sweating,confusion, headaches nausea 6 and at the very worst cases, convulsions, paralysisand death. What it is doing is attacking the nervous system. It's essentiallyshutting your body down. That is what kills people and why this is consideredsuch a bad thing. But there is a trick to all of these. The trick is even youhad a massive rocket barrage 7 of sarin gas, you wouldn't necessarily know that’swhat happened, because even though it is lethal 8, it’s not long lasting 9, itdisperses very quickly. Well investigators 10 now think, think they had someevidences that the Assad regime used sarin gas on people there, they would haveto work very hard to establish concrete proof.
 
Next today, new developments in BostonMarathon bombing investigation 11. Yesterday authorities announced that threeadditional suspects were in custody 12. They are friends of Dzhokhar Tsarnaev, thesurviving suspects from last month terror bombings. The man in the gray hoodieis Tsarnaev. The two people to his left are A zamat Tazhayakov and DiasKadyrbayev. They are from Kazakhstan. They came to the U.S. on student visas.The third new suspect is Robel Philippos. He is a U.S. citizen. These three aren't suspects in the actual bombing. The charges they are facing suggest theyare accused of helping 13 the suspected bombers 14 after the attack. And officials told CNN that the two Kazakhs are suspected of taking things from Tsarnaev’sdorm room and then throwing them in the dumpster. The third suspect has been charged with making false statements to law enforcement officials during aterrorism investigation.