1. In 1990, _____ Belgian inventor by _____ name of Bakelite invented the first of the modern plastics.

  A. a; a                         B. a; the                 C. the; a                       D. the£»/

2. With the prices going up every day, 300 yuan a month can hardly cover his _____ of living.

  A. standard                      B. cost                  C. price                        D. salary

3. It’s a little surprising that a house made of wood or bamboo may stay up in an earthquake while _____ made of steel and concrete may fall down.

  A. one                      B. that                          C. it                          D. what