40. According to the passage, which of the following is NOT likely to be supported? (A) Professional sports. (B) On-the-job training. (C) Social work. (D) Medical care.

43. Which of the following is NOT true according to the passage? (A) The shape of a blimp is supported by a metal frame. (B) Only the ground crew is needed to make a blimp fly. (C) A blimp needs a small engine to decide its direction. (D) Helium makes it possible for a blimp to rise.