下列现象与“地理”没有关系的是[ ]
A．夏天我们家乡昼长夜短
B．黑龙江的小麦在春天播种
C．台风“桑美”在浙江沿海登陆
D．电子产品更新换代很快
答案：D
I don't think you should ____ . Instead, you should eat more. [ ]
A. put on weight
B. lose weight
C. increase weight
D. miss weight
阿司匹林（pKa=3.5）在pH6.5的小肠内离子化与非离子化比率为（）
A.0.1
B.1
C.10
D.100
E.1000
