外国律师事务所驻华机构，必须经中华人民共和国司法部批准，在工商行政管理总局登记注册。
参考答案：对
Young people tend to get up very late unless ________ to rise early.
A．required
B．requiring
C．they were required
D．to require
与尿液相关的症状有哪些？
