在一张由复印机复印出来的纸上,经测量得知一个多边形的一条边由原来的1cm变成了4cm,那么这个多边形的另一条边由原来的4cm变成了( )。
16cm
单词拼写。请依据首字母和汉语提示写出单词的正确形式。(每词1分,共10词,共 10 分)
小题1: The times of the wedding ____ (仪式) and the ______(婚宴) are both written on the ____ (请帖).
小题2: There is a box at the (入口) to the restaurant and you ought to put money into it. But don’t worry, you don’t have to ____ (捐献,贡献) a lot of money. But remember that you can’t drink _________(白酒).
小题3: We seriously wrote Father Christmas, the North Pole on the (信封).
小题4: As we opened the new year (日历), Christmas cards arrived in the post.
小题5: My mother works in an (保险) company.
小题6: A person of (坚定的意志) always manages to finish the job, however hard it is.
某无色透明溶液,能与Al作用放出H2,此溶液中可以大量共存的离子组是( )
A.OH-、Mg2+、Ba2+、Cl-
B.SO、Na+、HCO、K+
C.NO、OH-、Cl-、Ba2+
D.Cu2+、H+、SO、NO