人体在生长发育过程中，______和______现象的出现，标志着人体开始具有了生殖能力，但此时人的身体并未发育完善．
进入青春期之后，男孩和女孩的性器官都迅速发育，并出现了一些羞于启齿的生理现象：男孩出现遗精，女孩出现月经．遗精是指男孩在睡梦中精液自 * * 排出的现象，月经是指进入青春期之后，女子每月一次的子宫内膜脱落引起的出血现象，月经期一般为4到5天，此时子宫内膜是一个创伤面，要注意经期卫生．遗精和月经都是正常的生理现象，我们要正确对待．月经和遗精现象的出现，标志着人体开始具有了生殖能力，但此时人的身体并未发育完善．
故答案为：月经； 遗精
Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.
Today technology has moved on ___小题3:__ . The Internet has served as a communication center. The general use of email has __小题4:__new opportunities for teachers to assist learning at a distance, which has an impact on __小题5:__ learning structures. As you can make more and more progress on your own, the role of the teacher is changing. Basic information and drill can be provided by computer; the teacher is then free to concentrate on the more important ___小题6:__: motivation and production of language in speech or writing. The latest development is a direct email link from self-study CD-ROMs to an online teacher. Now you can get __小题7:__ one-to-one tuition from any multimedia PC with an internet connection. When you need more help you __小题8:__ email the tutor. The tutor will know which course you are following and your results to date so he is able to provide good, relevant advice. All you do is to buy the CD-ROM at normal price and then get additional __小题9:__ as you feel the need. So the self-study becomes distance learning with all its advantages of flexibility and low cost. |