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