VI. 智力测试（IQ）（共5小题；每小题1分，计5分）
回答下列问题。(Answer the following questions.)
96. What number should replace the question mark?
21, 20, 18, 15, 11,     ?   
97. Have a look at these strange watches. By cracking the logic which connects them you should be able to work out what time should be shown on the face of the fifth watch.

98. Spell out a 7-letter word by using each letter only once.

99. Four girls have a basket with four apples in it. How can you divide the apples so that each girl gets a whole apple and one still remains in the basket?
100. What is that which has a mouth, but never speaks, and a bed, but never sleeps in it?