男性 * * 最狭窄且最薄弱的部位是
A． * * 外口B． * * 海绵体部C．膜部D． * * 前列腺部E． * * 内口
参考答案：C
用所给词的适当形式填空。
1. Look, this is a____(watch).
2. Where are your____ (book)?
3. -What are these?
-They're (dictionary).
4.I have three____(eraser).
5. Two _________ (girl)are not here today.
在排版软件中置入RGB色彩模式的彩色图像，RIP输出时只有K片上有网点信息。
