The air inside a house or office building often has higher concentrations of contaminants ( ) heavily polluted air outside.
A: like of
B: more
C: than do
D: than does
A: like of
B: more
C: than do
D: than does
举一反三
- The air inside a house or office building often has higher concentrations of contaminants ____ heavily polluted outside air. A: than does B: more C: as some that are D: like of
- The air inside .a house on office building often has more contaminants（）the heavily polluted air outside. A: than does B: as C: as some that are D: than that of
- Growing evidence indicates air within homes and other buildings can be more seriously polluted than industrialized cities.
- The freight rate of air express is much higher than that of other air transportation mode.
- 18. According to the professor, why are tornadoes able to destroy houses so easily? A: They create differences in air pressure inside and outside the house. B: Humid air rises rapidly toward the top of the house. C: Rotating air enters the house. D: Lower air pressure inside the house causes it to collapse.