图示女性生殖器官，并表示受精、受精卵发育和埋入子宫内膜的过程。
(1)女性的主要性器官是[ ]________，原因是___________________；
(2)男性性器官产生的i和g在[ ]________处相遇受精完成；受精卵f分裂后形成的胚泡慢慢移动到子宫中，最后植入[ ]________。
(3)h表示________。（A、受精卵 B、卵细胞 C、胚胎 D、精子）
(4)胚胎发育成胎儿后，最后通过________________从母体中获得所需的营养物质和氧。
(1)c卵巢 产生卵细胞，分泌雌性激素
(2)b输卵管 d子宫内膜
(3)C
(4)胎盘和脐带
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| When I was walking down the street the other day. I happened to find a small wallet 1 there. I 2 and opened it to see if I could find out the owner's name. There was 3 inside except a little money and an old photo - a picture of a woman and a girl about sixteen years old. The young one 4 the woman's daughter. I put the photo back and _5_ the wallet to the police station. I handed the wallet to a policeman. That evening I went to _6_ with my aunt and uncle. They also invited a young woman. So there were _7_ people at table. Her face was familiar. I was quite sure that we had met before, but I couldn't remember where I had seen her. _8_ the talk, the young woman happened to mention (提及) that she had lost her wallet that afternoon. Suddenly I knew where I had seen her. She was the mother of the young girl _9_. She was very _10_, of course, when I was able to tell her about her wallet. | ||||
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