1979年，伊拉克总统萨达姆表示要用武力解决领土争端的直接原因是

实验室用高锰酸钾来制取氧气．经探究，生成氧气的质量约是高锰酸钾质量的$\frac{1}{10}$．

（1）现有高锰酸钾32g，大约能生成氧气的质量是多少？

（2）这些氧气若装在容积为125mL的集气瓶中，最多装几瓶？（氧气在该条件下的密度为1429g/L）

（3）小明同学从与医生的交谈中获悉：正常人每分钟约呼吸30次，每次约吸入0.4L空气．请问一个人一天吸入人体内的氧气约为多少升？（计算结果取整数）

阅读短文，从方框中选择适当的词并用其正确的形式填空，使短文通顺、意思完整。请每空限填一词，每词限用一次。方框中有两项多余的。

Are you still doing the V for victory sign? It's out. The latest popular hand gesture（手势）is putting both of your hands and put them together to make a heart—shape. It is  ____ “hand heart”.

 Many young pop    ____  in the US have done the move in recent photos. “The‘hand heart’gesture means something    ____   'I love you' and 'thank you’, ”said Taylor Swift,the country singer.  “You can send a sweet，simple message without ____  a word.”
 Swift often does it at her concerts. And she is believed to be the first to   ____  it popular.
 Last month，Justin Bieber and____ uperstar friends did the “ hand heart” and put the photos online.They did it to help out three kids whose parents were killed in a car accident.

“It used to take much  ____  for nonverbal（非语言的）culture to move. But now ,It moves faster____ we have smart phones and the Internet.
In the Republic of Korea, the “hand heart “ has been  ____  for a long time, but in a different  ____  . People there put their hands above their heads and making a bigger heart shape with their arms. It means: “I love you.”