下列物质的用途主要利用其化学性质的是（ ）

任务型阅读。认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。每个空格只填1个单词。

    Time management refers to managing time effectively so that the right time is allocated to the right activity. Time management is essential in every field of life because time is the precious resource one needs to accomplish a task. Every single moment that passes once will never come back again. Time management helps you do your task in time and use your time more productively. It helps you to identify the useless activities which can be avoided and how time can be saved. It helps you allocate proper time for a task and perform the task more efficiently.

    A student's daily routine is filled with a lot of activities. Some are related to his studies, some are essential for his life and some are for entertainment or physical fitness. Still some activities have no use and just waste time. Similarly if the number of the activities for entertainment exceeds what is reasonable, they waste the time of a student. These activities include using the internet for chatting, playing games, watching movies or listening to music for hours on end. Such activities are called “distracters” which distract one from one's real purpose.

    Games and physical exercise are important for a student because they keep him fit in body and mind but game time should be controlled as it may waste his time.

    No one wastes time intentionally. Time is always wasted in an insensible way. That's why a student is aware of it until the days of exams come. So it is better to use the present time more effectively than cry over what you've done in the future.

    As for a student, time management compromises various steps. It is not only necessary to allocate time for different subjects but also to identify right time for each such subject. What's more, to identify the distracters which become causes of wastage of time is of significance as well.

    Take a pen and sheet. Write down all the activities you do in your daily routine. Calculate how much time you have for your studies other than other activities. Determine how much time a subject can take out of your total study time. See which subject need more time.

Time management

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       Oxford University has introduced confidence classes for female students to get them to compete for jobs in future and win chances to work in best companies.

       They may be young and gifted, but research at the excellent institution has found that female undergraduates(大学生)are shying away from applying for jobs in banking, finance, management consultancy(咨询), engineering and resource management. Partly as a result, starting salaries for women when they graduate are on average ￡2，000 to ￡3，000 lower than their male counterparts.

    “Women are earning less on leaving Oxford.It is ridiculous，”said Jonathan Black, the careers service director at the university.“We have high quality and high achieving students of both genders.But it appears that women are selecting lower paid jobs. They accept more prejudice in certain industries and are saying 'I won't struggle for that really high paid job'. We are not trying to push loads of women but we are trying to say, you should feel able to apply for these sorts of jobs.Boys seem to have more self­confidence and see the bigger picture generally, even though their self­belief is not necessarily based on any greater academic advantage.”

       The four­day programme at Oxford will help 45 female undergraduates improve their self­confidence and decision­making, think positively and build up their strengths. Confidence training will teach them how to deal with the opposition and challenging situations.

       Successful female employees from RBS and BP, which are supporting the course, will talk about their lives and careers. RBS's involvement follows a promise by the bank to increase its national percentage of female graduate applications from 35 percent to 50 percent by 2014.

       Sophie Kelley, 20, studying law at Oxford, is hoping the course will make her more confident in courses and interviews.“I am applying to London's law firms for vacation schemes and it is so competitive，”she said.“The rejection letters don't give any real feedback(反馈), so I'm expecting the programme might give me a hand and some advice.”

Notes：

①institution n．社会公共机构，制度，制定　②counterpart n．与对方地位、作用相当的人(或物)　③gender n．性别　④prejudice n．偏见，成见