精液中无果糖可见于
A．阴囊炎
B．前列腺炎
C．睾丸炎
D．精囊阻塞
E．射精管阻塞
参考答案：D
根据句意及首字母提示补全单词。
1. There are three p________ in my family.
2. What's your f________ number?
3. In my school there are a________ eighty teachers.
4. I think e________ is at school today.
5. Don't w________. You can do it well.
参与构成DNA分子的单糖是
A．核糖B．磷酸核糖C．2-脱氧核糖D．3-脱氧核糖E．磷酸果糖
