单项选择题
A.The Justice Department and the European Union. B.Google and Barnes & Noble C.Publishers and writers. D.Kindle users and booksellers.
A.driving in the presence of an adult should be made a rule B.they should be prohibited from taking on passengers C.they should not be allowed to drive after 10 p.m. D.the licensing system should be improved
A.to turn black B.to corrode C.to become new D.to disappear