【单选题】-When will you go back to your hometown? - _______.
A.
Until the work is finished
B.
Not until the work is finished
C.
After the work will be finished
D.
As soon as the work will be finished
【单选题】When you are on the bus to work in the morning, smile to the people sitting beside you, you will get his smile ______.
【单选题】我国专利法规定,实用新型专利的保护期限为()。
【单选题】2002年10月提出的实用新型专利申请于2003年11月被授予实用新型专利权后,其有效期为( )。