吸烟不仅有害健康而且花钱。如果一位吸烟者每天吸一包18元的香烟,那么他每年花在吸烟上的钱大约要[ ]
A.5000元
B.7000元
C.10000元
答案:B
It’s said that the number of people ___ seriously injured in the earthquake of Japan on Oct 26th 2013 ___ no more than 10.
A.are; reach
B.who are ; reaches
C.whom are; reaches
D.are; reaches
用手反复弯折铁丝,弯折处的分子热运动_____________温度升高,这是通过__________的方式改变铁丝的内能.