化学镀的特点是什么。
参考答案：
（1）不需要外电源；（2）均镀能力好；（3）镀层具有孔隙度小、硬度高等特点；（4）适合在金属和非金属上镀覆。
6月5日某投机者以95.45的价格买进10张9月份到期的3个月欧元利率（EURIBOR）期货合约，6月20日该投机者以95.40的价格将手中的合约平仓。在不考虑其他成本因素的情况下，该投机者的净收益是（）。
A.1250欧元
B.-1250欧元
C.12500欧元
D.-12500欧元
根据短文内容和所给中文提示，在空白处填入单词。每空限填一词。
US President Obama gave a TV speech to his country’s students on the 小题1: (第一) day of school. He made it from a 小题2: (教室) in a high school. He told them to study as 小题3: (努力) as they could.
“NO matter(无论) what you want to do with your life, you will need an education, ” he said.
“This isn’t just important for your own life and your own future. It will 小题4: (决定) the future of this county.”
Obama also said that school is not always 小题5: (容易). The challenges (挑战) of life make school a difficult time.
“Maybe you can’t get your Parents’ 小题6:(帮助). Maybe someone 小题7: (要求) you to go something wrong. But there is no excuse for not doing your homework of for not 小题8: (尝试). Your attitude(态度) toward yourselves and your education is 小题9: (最) important.”
Students shook 小题10: (手) with Obama at the end of the class.
无论) what you want to do with your life, you will need an education, ” he said.
a difficult time.