在Actionscript中,下列选项属于只读属性的是()。
A._frame
B._rotation
C._width
D._framesloaded
参考答案:D
阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填入一个适当的英语单词。所填单词要求意义准确,拼写正确。
We moved away from my grandmother when 1 was eight years old. 小题1: her terribly.Two years later my mother and father___小题2:___(离婚).I felt as if my world was falling apart.So Mother took my little brother and me back to visit my Granny once in a w 小题3: .
Granny didn’t live in a fancy house 小题4: have expensive things.But it was the little things she gave me that had always mattered.1 will always remember she saved her pennies in a glass jar .I am sure Granny could have used those pennies h 小题5: but she saved them to give us when we came to visit.I don’t remember how much we collected on our visits.
Those小题6: (记忆),of when 1 was a child,still give me w 小题7: feelings on days that I need them.A Granny’s love stays小题8: a grandchild,down through the years,even when that child becomes a grandma.I often wonder,after all those years,when I am lucky 小题9: to find a penny 小题10: on the ground somewhere, if it could possibly be Granny giving me pennies from heaven.
如图是某同学正在绘制的实验室用高锰酸钾制取氧气的装置图。请回答下列问题:
(1)将实验装置图补充完整;
(2)写出用该装置制取氧气的化学方程式 。
(3)在化学实验中使用仪器A的注意事项是 。
(4)将红热的木炭(用坩埚钳夹持)插入盛有氧气的集气瓶时.正确的操作方法是 。