单项选择题
The No. 5 subway line, ()in October, 2007, has greatly improved the traffic conditions in Beijing.
A. opened B. was opened C. being opened D. to be opened
单项选择题 Preferential policies and ready cooperation do play a role in （）poverty.
单项选择题 In spite of a problem with the （）equipment, some very useful work was accomplished.
单项选择题 The fact that these regions are （）in natural resources doesn't mean local people are well off.
