小珍家种植的玉米有倒伏现象，这是缺少某种营养元素的症状。据此，应该施用的化肥是 [ ]
A. 尿素
B. 磷酸钙
C. 氯化钾
D. 碳酸氢铵
答案：C
——My family usually go hiking for vacation. I like hiking, but I want to try something different this year.
—— ____________
A．Let’s go!
B．Cheer up!
C．Like what?
D．Take care!
混合型酸碱平衡紊乱
