1. X-rays are basically a form of radiation.
[A] fundamentally [B] definitely [C] probably [D] frequently
2. John's unabashed behavior caused great concern among his teachers.
[A] terrible [B] unembarrassed [C] cowardly [D] unforgivable
3. In the United States there are numerous federal, state and local programs aimed at combating air pollution.
[A] fighting [B] limiting [C] prohibiting [D] avoiding
4. Older citizens in the United States vote more regularly than younger ones, particularly when a state's local issues are being considered.
[A] cast their ballots [B] run for office [C] criticize the government [D] give their opinions
5. Ten names were deleted from the list of those invited to attend the conference.
[A] suggested for [B] included in [C] removed from [D] absorbed from
Keys: 1～5 ABAAC