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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 cars 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 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 aeroplane. 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 travellers. Here are some health benefit of bicycling. ● It helps to prevent heart diseases. ● It 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 ● It can improve your mood. Exercise like bicycling has been shown to make people feel better, more relaxed and self-confident. Bicycling is healthier than driving.
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参考答案:
举一反三
【判断题】某些自我欺骗是使自己产生幸福感的一种方式。()
A.
正确
B.
错误
【单选题】出生后人造血干细胞的主要来源是
A.
淋巴结
B.
脾脏
C.
骨髓
D.
胸腺
E.
腔上囊
【简答题】比较DNA和蛋白质(包括酶)变性后其结构、性质和生物学功能等方面的异同点。
【简答题】加热强度取决于加热持续时间和温度,预热杀菌的温度和时间为 ____;低温长时巴氏杀菌为____;高温短时巴氏杀菌为____或80°C以上/5s;超巴氏杀菌为1____;超高温瞬时灭菌为____或145°C/1s。
【判断题】广义上:分子生物学包括对蛋白质和核酸等生物大分子结构与功能的研究、以及从分子水平上阐明生命的现象和生物学规律。
A.
正确
B.
错误
【判断题】蛋白质组学的研究内容包括鉴定蛋白质研究蛋白质的表达情况、一级结构、空间结构、修饰形式、蛋白质的功能及与其他生物大分子相互作用的方式等。
A.
正确
B.
错误
【多选题】水的生理功能包括:
A.
水是微生物的主要组分,溶剂,有助于营养物的溶解吸收。
B.
水参与细胞内一系列化学反应。
C.
水 能够维持蛋白质、核酸等生物大分子稳定的天然构象。
D.
水能为微生物提供能量。
【判断题】广义上:分子生物学包括对蛋白质和核酸等生物大分子结构与功能的研究、以及从分子水平上阐明生命的现象和生物学规律。
A.
正确
B.
错误
【单选题】西餐礼仪,使用刀叉的基本原则是:
A.
右手持刀或汤匙,左手拿叉,用餐后,将刀叉摆在四点方向即可
B.
右手持刀或汤匙,左手拿叉,用餐后,将刀叉摆在六点方向即可
C.
左手持刀或汤匙,右手拿叉,用餐后,将刀叉摆在四点方向即可
D.
左手持刀或汤匙,右手拿叉,用餐后,将刀叉摆在六点方向即可
【单选题】超高温杀菌加热温度为()°C时间为()秒
A.
135-150  10-15
B.
135-150 2-8
C.
100-120  2-8
D.
100-120  10-15
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