与本人或他人过去的研究结果对比
A．碘化消毒B．紫外线消毒C．常量氯化消毒D．超量氯化消毒E．加热消毒
参考答案：C
根据汉语填写句中所缺单词。
1. ______ (检查) your homework carefully before you hand it in .
2. My parents are both ______ (普通的) teachers They work hard.
3. There are many shops ______ (沿着) the street .
4. Lucy is careless. She made a lot of ______ (错误) in the exam.
5. What a ______ (特别的) present! I'm so excited.
神经纤维的动作电位复极相的产生机制是
A、Na＋内流
B、K+外流
C、Ca2+内流
D、Mg2+外流
E、Cl-内流
