1．—My son is addicted to computer games. He is hopeless, isn't he?
—Yes, ________ he is determined to give up and start all over.
A．if B．when
C．even if D．unless
2． Crossing roads without taking traffic lights into consideration, ________ they are part of a crowd, has been labeled as the “Chinese style of crossing roads.”
A．since B．as if
C．though D．so long as
3．Provide your doctor with a detailed medical history ________ he can give you accurate treatment.
A．even if B．in case
C．so that D．as though
4． He always keeps silent when others are talking excitedly, ________ inwardly he is a man full of passion.
A．and B．for
C．so D．yet
答案：D 考查并列连词。句意：在别人兴高采烈地讨论的时候他总是保持沉默，然而，内心深处他其实是一个激情澎湃的人。空前后为转折关系，故用yet，表示“但是，然而”。
