43 Pollution is often a consequence of the rapid ______ of human population. (A)speed (B)growth (C)consumption (D)outcome

1.Which of the following is wrong about the PCs you can buy nowadays? (A) floppy disc drive is typically not equipped (B) hard disc is typically in the rang ge of 500GB-4TB (C) CPU clock ranges in 2-4 MHz (D) RAM is typically in the ran nge of 4-16GB (E) all the above are correct (choose this one only if none of the above can be chosen).