化学与生产、生活密切联系,对下列现象或事实解释错误的是( )
选项
现象或事实
解释
A
洗涤剂能去除衣服上的油污
洗涤剂具有乳化作用
B
用熟石灰改良酸性土壤
H+和OH﹣能结合生成H2O
C
水银温度计能指示温度
汞原子之间的距离随温度升高而增大
D
液态二氧化碳可用于图书馆灭火
降低图书档案的着火点
A:A
B:B
C:C
D:D
下列探究没有意义的是( )
如图所示,已知∠B=∠C,AD∥BC,试说明:AD平分∠CAE.
⑴Are you going to the beach?____ A. I'm going to the shop.
⑵Where are you going?____ B. Yes, I am.
⑶Is he going to the bank?____ C. She is going to the park
⑷Where's she going? ____ D. No,he isn't.
⑸What's Jenny doing?____ E. She's thinking