将100mL 5 mol·L-1 NaOH(aq)稀释到500mL ，稀释后溶液
题型：计算题
问题：
将100mL 5 mol·L-1 NaOH(aq)稀释到500mL ，稀释后溶液中NaOH的物质的量浓度为______________； 将氯气通入此溶液充分反应，可制得漂白液，其中含有效成分的物质的量最多为_________________。
题型：计算题
A. Choose the best answer (根据短文内容，选择最恰当的答案) (12分)
Sir Steven Redgrave—Winner of 5 Olympic Gold Medals
“In 1997 I was found to have developed diabetes (糖尿病), believing the profession trained for the whole of my life ended, I felt very sorry. Then one of my friends said there was no reason why I should stop training and competing. That was it—the encouragement I needed. I could still be a winner if I believed in myself. I am not saying that it isn’t difficult sometimes. But I wanted to prove to myself that I wasn’t finished yet. Nothing is to stand in my way.”
Karen Pickering—Swimming World Champion (冠军)
“I swim 4 hours a day, 6 days a week. I manage that amount of work by putting it on top of my diary. This is the key to success—you can’t follow a profession in any field without being well-organized. Make a list of what you believe you can achieve. Trust yourself, write down your goals for the day, however small they are, and you’ll be a step closer to achieving them.”
Kristen Stewart—Actress
“When things are getting hard, a voice inside my head tells me that I can’t achieve anything. Then, there are other distractions, such as family or hobbies. The key is to give most of your attention to one thing. When I feel nervous, it helps a lot to repeat words such as ‘focus’ , ‘calm’, ‘peace’, either out loud or silently in my mind. It makes me feel more in control and increases my confidence. This is a habit and is a powerful psychological(心理学的) tool.”
小题1:Sir Steven Redgrave mainly talks about ________.
A．difficulties stopped his profession
B．doctors offered him help
C．illness couldn’t stop him trying to win
D．he didn’t believe in himself小题2:Karen Pickering trained in swimming ________.
A．6 hours a day
B．6 hours a week
C．6 days a week
D．4 hours a week小题3: Karen Pickering puts ________ on top of her diary.
A．the amount of work
B．her activities
C．her goals
D．her sports news小题4:The underlined word “ distractions” probably means ________.
A．things that turn one’s attention away
B．things that make one tired
C．words to enjoy
D．good habits小题5:The same character of the three people is________.
A．self-confidence
B．happiness
C．humour
D．wisdom小题6:The best title for the passage is ________.
A．How to Be a Winner
B．Health and Food
C．Difficulties and Habits
D．Be a Sportsman