The operation between two fuel injections is called a （）.

Be prepared for lots of ___before you land a job. A: objections B: injections C: rejections

The successful attempt to save a badly bitten boy in 1885 was based on the theory that______. A: infective agent of rabies could be used for vaccination B: a series of injections of new virus could make people resistant to rabies C: the infective agent of rabies could be recovered from the infected body D: the longer incubation period would enable human body to build up enough resistance