標題:
F.1 English's I.S.
發問:
Fill in the blanks1. Reproduction is the process by which living things produce ____________ to avoid______________.2. Single-celled living things usually reproduce by _______________. This type of reproduction does not involve any sex cells and is called __________.3. Human reproduction involves the joining of... 顯示更多 Fill in the blanks 1. Reproduction is the process by which living things produce ____________ to avoid ______________. 2. Single-celled living things usually reproduce by _______________. This type of reproduction does not involve any sex cells and is called __________. 3. Human reproduction involves the joining of sex cells. This type of reproduction is called _______________. The sex cells of males are sperms while those of females are ________________. 更新: 4. The joining of a sperm and an egg is called ______________. It usually occurs in the oviduct of a female. 5. The testes of a male produce sperms. Sperms move along ______________________ to the ______ during which ____________ will produce liquids as a medium for sperms to swim. 更新 2: 6. The ovaries of females start to produce eggs ______ brith. 7. An ______________ is formed by divisions of the fertilised egg. It will then attach to the lining of the uterus. This process is called _______. 更新 3: 8. The ____________________ allows the exchange of materials between the mother and the embryo. 9. During brith, the muscles of the _____________________ contract strongly to push the foetus out of the mother's body through the ______. 更新 4: 10. There are many similarities between parents and offspring. the passing on of characteristics from parents to their children is called ______. 更新 5: ﹡識答幾多答幾多,超急。
最佳解答:
F.1 English's I.S. Fill in the blanks 1. Reproduction is the process by which living things produce offspring to avoid extinction 2. Single-celled living things usually reproduce by dividng into two. This type of reproduction does not involve any sex cells and is called asexual reproduction. 3. Human reproduction involves the joining of sex cells. This type of reproduction is called sexual reproduction. The sex cells of males are sperms while those of females are eggs. 4. The joining of a sperm and an egg is called fertilisation. It usually occurs in the oviduct of a female. 5. The testes of a male produce sperms. Sperms move along sperm tube to the sex glands during which urethra will produce liquids as a medium for sperms to swim. 6. The ovaries of females start to produce eggs to give brith. 7. An embryo is formed by divisions of the fertilised egg. It will then attach to the lining of the uterus. This process is called implantation 8. The umbilical cord allows the exchange of materials between the mother and the embryo. 9. During brith, the muscles of the uterus contract strongly to push the foetus out of the mother's body through the vagina. 10. There are many similarities between parents and offspring. the passing on of characteristics from parents to their children is called heredity. 唔知岩唔岩,但我睇住我本IS 書黎做,錯都唔會有好多 希望幫到你
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1:offsprings2: /Asexual 3:Fetilization /egg 4:Fetilization 7:Embryo 9:uterus 2007-01-26 18:08:06 補充： sorry i forgot many http://www.motherschoice.com/pages/index.asp?did=24&pg=sex_edmay help you
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