前列腺增生最主要的症状是
A．血尿
B．排尿痛
C．进行性排尿困难
D．会阴疼痛和便秘
E．尿流中断
参考答案：C
根据汉语提示完成单词拼写:
1. We should not forget the _____. (过去)
2. There are _____(千) of students in our school.
3. We _____ (确实) enjoyed working on the farm.
4. There are four _____ (季节)in a year.
5. One of the _____ (旅游者)came form Australia.
体育锻炼对生理系统有着重要的促进作用，但对学前儿童的心理发展没有太大的价值
