[新知导引]
Ⅰ.判断下列各句中的关系词在从句中充当什么成分
1．①There are many reasons ________ this is possible, but one of the main factors is the Chinese writing system.
②I'm not satisfied with the reason ________ you gave us for your failure in the exam.
2．①Over the years, it developed into different forms because that was a time ________ the Chinese people were divided geographically.
②It was a pleasant time ________ we spent together working on the challenging project.
3．①Emperor Qinshihuang united the seven major states into one unified country ________ the Chinese writing system began to develop in one direction.
②China is a highly civilized country ________ appeals to so many foreigners.
Ⅱ.在空白处填入适当的介词
1．These were animal bones and shells ________ which symbols were carved by ancient Chinese people.
2．Written Chinese has also become an important means ________ which China's present is connected with its past.
