来源:普特英语听力 2019-03-10
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 The U.S. is stepping up efforts to help Laos deal with such problems as hunger, the existence of unexploded bombs and the need to provide access to technology in some areas. U.S. Secretary of State John Kerry outlined the efforts during a Monday visit to Vientiane. He also held talks to lay the groundwork for a special ASEAN summit next month in California.

This is VOA news.
Suicide bombers Monday struck the town of Bodoon the Nigeria-Cameroon border. The blasts killed at least 25 people and wounded many others.  Officials say up to four bombers blew themselves up in the town, located in an area frequently targeted by Boko Haram militants. There was no immediate claim of responsibility.
step up:加强 
ASEAN summit:东盟会议