题目

Passage 2Amy was looking for a gift for her little daughter. Suddenly she stopped before a store of dolls. “Girls like dolls,” she thought as she stepped into it. Looking around, she saw a grandma doll—one with gray hair and a pair of glasses. In her mind appeared Joyce, her mother.When Amy was a little girl, she got her first doll from Joyce for her birthday. Then the second, the third… A doll a year never arrived late.“Why always a doll?” This question had been in Amy’s mind until one day her father gave the answer.Little Joyce dreamed to have a doll. Her parents promised one f1．指出下列命题，p是q的什么条件，q是p的什么条件．（1）p：x$＞\frac{1}{a}$，q：x＞$\frac{1}{a}$+1．（2）p：x≥$\frac{1}{2}$，q：x2-x+$\frac{1}{4}$=0．（3）p：（x+1）（x+2）=0，q：x＜0．（4）p：a＜b，q：|a-b|≥a-b．