涂料工业中使用的有机硅树脂一般是以有机氯硅烷单体为原料，经（_爱下问搜题

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问题填空题

涂料工业中使用的有机硅树脂一般是以有机氯硅烷单体为原料，经（）、（）、（）及（）等步骤来合成。

答案

参考答案：水解；浓缩；缩聚；聚合

完形填空

Mary and Peter were having a picnic near a river when Mary noticed something flying overhead. “       ,”she shouted to her friends. “That’s a spaceship up there and it’s going to         here.”
Frightened (吓唬) by the strange silver colored spaceship,        of the young people got in their       and drove away quickly. Peter         Mary and was always close to her. They, more           than frightened, watched the spaceship land, saw a door open. When nobody         , they went to the spaceship and looked into it. In the center of the floor         was a pile of food. Peter followed Mary into the spaceship and didn’t       the door close behind him. The temperature fell quickly and the        young people lost consciouseness (知觉) . When they woke up, they were          to see that they were back by the river        . The spaceship had gone. Their car was nearby.
“What        ?” said Mary.
“Don’t ask me; perhaps we had a          .” Peter said slowly. “Did you …. Did you see a spaceship?”
“Yes, ” said Mary. “Oh, Peter, we          have seen a UFO coming from another world.”

D．curious (好奇)

名词解释

周易