眼虫、变形虫等属于____门，此门动物一般身体微小，结构简单，整个身体只有一个细胞构成；腔肠动物生活在水中，体壁由____层和中胶层构成，体内有消化腔，有口无肛门；爬行动物皮肤干燥而又粗糙，皮肤表面覆盖着无数角质的细鳞，可以____，适应陆地生活．

世界是物质的世界，世界的真正统一性就在于它的物质性。下列体现物质性的是

①天地水火日月田土 ②物质资料的生产方式 ③我国公民享有宗教信仰自由权利（  ）

④运动是物质的固有属性和存在方式 ⑤规律是客观的，是不以人的意志为转移的

⑥生产力与生产关系的关系 ⑦购买“定居火星”有去无回的单程票 ⑧实践活动

    Mary works in a bank. She is ____ busy every day that she____ no time to make dinner. There is a(n)____near Mary's house. After Mary comes back home from work, she likes to go to the restaurant____dinner.

    One day,____ Mary was in the restaurant, she saw____old man next to her looking for (寻找)something on the floor(地板).Mary felt surprised. So she____the old man.

    "____are you looking for?"

    "Oh, a piece(块)of bread," the man answered.

    "A piece of bread? Oh, the floor is so____.Please take this piece." Mary gave(给)a big piece of bread to the old man.

    "But my teeth____in that piece of bread."