Science & Environment
Teenage rocket maker
，详情可参考搜狗输入法2026
Stephen StaffordBBC News, South
When Chávez became Venezuela's president in 1999, oil prices were climbing. In the early 2010s, a barrel would often fetch about $100, providing the government with plenty of money to pour into social programmes. But with current prices around the $65 mark, the country looks less like a reasonable investment.