像质剂通常用与被检工件材质相同或对射线吸收性能相似的材料制作。

用方框中词语的适当形式填空，使短文正确、连贯、通顺，每个词限用一次。

always     leaf     be    giraffe   spend   want   never    from check    information    watch    weekend     learn    bad    zoo

Dear Sam,
How are you? I’m happy to hear小题1: ________ you. Let me tell you what I usually do at小题2: ________. On Saturday morning, I 小题3:________ do my homework at home. I小题4: ________ about three hours in finishing my homework. In the afternoon, I usually小题5:________ my emails and search for some小题6:________ on the Internet. I小题7: ________ play computer games on it because I think it’s小题8:________ for my eyes. Sometimes I watch movies with my mother. She likes小题9: ________ movies too. I also小题10:________ English on it. In the evening my parents and I 小题11:________ at home. We listen to music together. On Sunday I often go to the小题12:________ to see animals with my sister. My favourite animals are 小题13:_______. They are very tall. They like eating小题14:________ as well as plants. But my sister小题15:________ to see pandas because she thinks they are very cute.
Yours,
Yang Mei