题干

高铁酸钾( K2FeO4)是一种新型的自来水处理剂,它的性质和作用是

A:有强氧化性,可消毒杀菌,还原产物能吸附水中杂质

B:有强还原性,可消毒杀菌,氧化产物能吸附水中杂质

C:有强氧化性,能吸附水中杂质,还原产物能消毒杀菌

D:有强还原性,能吸附水中杂质,氧化产物能消毒杀菌

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A

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The Advantages of Hobbies

    Hobbies provide entertainment and a chance lo continuously learn something new and develop a skill set. ____

    Hobbies are praised as a key to stress reduction.Becoming lost in the mental concentration or physical action which you are deeply interested in helps you shift focus from the parts of life that are stressful. ____ And in turn you are more peaceful when working on other work.

    ____ Many people set goals with their hobbies that provide them satisfaction when these goals have been achieved.These goals can be simple,like improving a golf score,writing a certain number of pages for a novel each day or seeing an entire collection of classic films.

    Hobbies provide a sense of community when you meet other people who enjoy similar activities. ____ More populated cities typically have numerous clubs or groups for people to share their knowledge and enthusiasm about a particular hobby.Becoming a member of one of these organizations allows greater growth within your hobby,as well as a chance to make new friends.

    Having a hobby can develop a talent that makes a person feel proud and satisfied.For example,a tennis hobby developed at a young age can lead lo a career as a professional athlete one day. ____For example, writer Vladimir Nabokov also collected butterflies,which allowed him to do better in his chosen fields because he used learned skills from one to improve the other.

A.There are a variety of hobbies.

B.Hobbies provide a sense of achievement.

C.Some hobbies affect other aspects of your life.

D.Focusing on something enjoyable can calm the mind.

E.They also provide many other social and health benefits.

F.Having a hobby increases the chances to interact with like-minded people.

G.Some hobbies containing physical activities offer an enjoyable way to stay healthy.