题目

Hello, I’m ‘Tom’. I’m the house of two pencils and three pens. Oh, two rulers and an eraser are here, too. They are good friends. I’m blue with some flowers on my face. And they’re red, purple and pink. I have good friends, too. The English book and the dictionary are my friends. We are in a red schoolbag. Our owner( 主人) is a nice girl. Her name is Linda Green. She takes(带) me to school by bike every day. 1. Tom is________. A. red              B. purple        C. blue           D. pink 2. _______ are Tom’s friend. A. two pencils and three pe15．氧化锆（ZrO2）是一种高级耐火原料，其中锆元素（Zr）的化合价为（　　）A．0B．+2C．+3D．+4