日常生活中见到下列现象,其中发生了化学变化的是 [ ]
A.冬天的早晨,玻璃窗上出现美丽的冰花
B.自行车轮胎在烈日下爆裂
C.牛奶放置时间过长变质
D.玻璃杯被打碎
答案:C
化生不发生于( )
A.肾盂黏膜
B.结缔组织
C.支气管黏膜
D.子宫颈黏膜
E.神经纤维
What happened to the city after the mass move
A.Housing costs decreased.
B.Crime rate was much lower than before.
C.All business moved out.
D.Cities declined.