Their use was limited by laws, the first dates back to the 14th century.
| A．of which | B．of them |
| C．from which | D．in them |
In the 1990s．a trip to Zhangjiajie cost less than 500 yuan，but now with the same amount of money you______even cover the entrance fee．
A．couldn’t B shall’t C．can’t D．won’t
Russia will soon return 174 sq km of territory on the northeast border to China, ______
more than 40 years of negotiations．
| A．ending | B．ended | C．to end | D．being ended |
Modern China is experiencing a completely new period_____respect for science and creativity has become the guiding principle of society．
| A．which | B．where | C．in which | D．that |
Traffic restrictions have come into effect in Beijing ______to improve the capital’s air quality and traffic situation for the 2008 Olympics．
| A．in order that | B．in an attempt | C．at an attempt | D．in a try |
President Hu Jintao urged that every effort to_____rescue and treat the injured when the earthquake happened in Sichuan this year．
| A．is made | B．must be made | C．should make | D．be made |