容量为64块的Cache采用组相联方式映像，字块大小为128个字，每4块为一组。若主存容量为4096块，且以字编址，那么主存地址应为 (30) 位，主存区号应为 (31) 位。

A．15

B．17

C．19

D．20

用括号内所给单词的适当形式填空。

1.  We are against _____ (chop)  wood for a meal in the forest.

2.  Many people in that village have got a cancer because they drank the _____ (pollute) water.

3.  I am _____ (disgust) at the people that have bad manners.

4.  My elder brother decided to go abroad to continue his _____ (educate).

5.  The skirt is very _____ (suit) for you.  You look very pretty m it.

6.  Cheetahs are killed because of their beautiful _____ (spot) fur.

7.  —What do you call that _____ (fur) animal?

     —A chimpanzee.

8.  Children like monkeys because they are _____ (play).

9.  The panda is one of the _____ (endanger) animals in the world.

10.  We all know that Australia is the home of _____ (kangaroo).