静息电位形成的基础是()。
A.K+外流
B.K+内流
C.Na+外流
D.Na+内流
参考答案:A
根据句意及括号内所给英文或汉语提示,完成句子。
1.—May I _______(study) Chinese with you?
—No problem.
2. Bill wants _____(visit)the Great Wall tomorrow.
3.—Is the English corner _________(help) to you?
—Yes, of course.
4. My name is Michael. You can _________(称呼) me Mike for short.
5. I have a _________(宠物) cat. Its name is Jiaojiao.
中国外交政策的根本原则是( )
A.维护世界和平
B.和平共处五项原则
C.加强和巩固同广大发展中国家的团结与合作
D.独立自主