Question

—The problem is very difficult. I'm afraid you can't work it out now.
   —     I fail this time, I will try it again.

A．Even if

B．Since

C．As if

D．Though

Answer 1

：A

：考查连词辨析。A即使；B既然；C似乎；D尽管；句意：—这个问题很难，恐怕我现在无法算出来。—即使我这次失败了，我会再次尝试的。根据句意说明A正确。