细胞外液主要阳离子是
A.K+B.Na+C.Ca2+D.Mg2+E.Zn2+
参考答案:B
使用扣车按钮使用后,列车将收不到允许运行的速度码。()
Complete the sentences according to the Chinese meaning. (根据汉语提示完成下列句子)
1. The old man is (恼火) his son.
2. I did (更好) maths than English
3. When the UFO (起飞), the man was fiding the bike.
4. Langzhong is a beautiful place. I fall in (爱上) it.
5. I think I have (学得有趣) Chinese.