按要求改写句子。

******指出，我们强调把公有制经济巩固好、发展好，同鼓励、支持、引导非公有制经济发展不是对立的，而是有机统一的。公有制经济、非公有制经济应该相辅相成、相得益彰，而不是相互排斥、相互抵消。从哲学角度，这体现出现阶段（    ）

①公有制经济和非公有制经济可以消除差异和对立

②要全面准确的认识矛盾统一体内双方的地位作用

③非公有制经济与公有制经济的协调性是主流

④公有制经济和非公有制经济在矛盾体内地位平等

 民主与法制的建设是国家政治生活的重要内容。请阅读材料，回答问题。

材料一：  中华人民共和国的一切权力属于人民。人民行使权力的机关是全国人民代表大会和地方各级人民代表大会。

材料二：“民法是国家的基本法律，民法规范平等主体之间财产关系和人身关系，它将是社会生活的基本准则。”

材料三：  对任何人犯罪，在适用法律上一律平等。不允许任何人有超越法律的特权。刑罚的轻重，应当与犯罪分子所犯罪行和承担的刑事责任相适应。

将单个的脱氧核苷酸连接成DNA分子的主要的酶是（ ）

根据短文内容，选择正确答案。

D

    More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that's why there are 1.4 billion bicycles and only 400 million ears on roads worldwide today. Bikes can take you almost anywhere, and there is no oil cost!

    Get on a bicycle and ride around your neighbourhood. You may discover something new all around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can bike to work and benefit(受益) from the enjoyable exercise without polluting the environment. You don't even have to ride all the way.

    Folding(折叠) bikes work well for people who ride the train. Just fold the bike and take it with you. You can do the same on an airplane. A folding bike can be packed in a suitcase. You can also take a common bike with you when you fly. But be sure to look for information by getting on airline websites. Not all airlines are bicycle-friendly to travelers.

    Health Benefits of Bicycling:

    It helps to prevent heart diseases.

    Bicycling helps to control your weight.

    A 15-minute bike ride to and from work three times a week burns off five kilos of fat in a year.

    Bicycling can improve your mood(心情).

    Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident.

    Bicycling is healthier than driving.