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 原位核酸分子杂交用核酸探针有（）
单项选择题 牙尖交错时，上下牙的对位关系主要的指标是()
单项选择题 The Globe Hotel Ideal for conferences ·International menu ·Beautiful rural t0cation ·Team of fifty experienced staff Call: 0254 6834 The Globe Hotel（）
