A:根据纯净物的元素组成,将纯净物分为单质和化合物
B:根据水溶液或熔化状态下能否导电将化合物分为电解质和非电解质
C:根据分散系是否具有丁达尔现象将分散系分为溶液、胶体和浊液
D:根据反应中是否有电子的转移将化学反应分为氧化还原反应和非氧化还原反应
阅读《正确的态度成就人生》一文,完成小题。 ①一条蚯蚓,遁地三尺,穿越黑暗,缘于它坚持不懈地挖掘;一只大鹏,俯瞰五岳,睥睨江河,缘于它始终不渝地飞翔。一条山路,尽管崎岖险恶,但不畏艰险的人终会抵达高山之巅;一条大道,尽管平坦宽阔,但瞻前顾后的人也会半途折戟沉沙……这一切,都缘于态度。 ②端正学习态度,可以使一个学子在学业上柳暗花明;调整工作态度,可以让一个人在职场中游刃有余。正确的人生态度,是用来成就人生的。它可以使一个人清醒地审视自己,理智地面对人生,不好高骛远,不随波逐流,不为名利所惑,不为困境所溺,乐观积极,昂扬向上,从而在浮躁的尘世上从容不迫,在喧嚣的生活中淡然自如。 ③在一生中,总会为自己设定一个人生目标,而正确的态度则会使这个目标更加坚定。一个拥有积极态度的人,往往专注并执著于自己的目标,且为之殚精竭虑,为之废寝忘食、心无旁骛、义无反顾。他们的人生态度常常是明朗、坚定、睿智、乐观的,像洒向草地的阳光,像掠过江面的劲风,在灿烂中摇曳着生机,在刚劲中透露着力量,充满着无限活力。抱有消极人生态度的人则不然。他们往往对自己所追求的目标热情不高,投入不够,慵懒、倦怠、左顾右盼。三心二意,像秋日的落叶般飘零,像墙上的衰草般枯败、沉郁,没有活力,没有希望。 ④不同的人生态度,也是自我品质的一种反映。拥有乐观人生态度的,一定是一个坚强的人;拥有豁达人生态度的,一定是一个大度的人;拥有平实人生态度的,一定是一个谦逊的人;拥有严谨人生态度的,一定是一个一丝不苟的人;处处为他人着想的,一定是一个富有爱心的人;时时兼济苍生的,一定是一个心怀天下的人。 ⑤如果说,品质是从生命的个体上旁逸斜出的一条绿色藤蔓的话,那么正确的人生态度则是绽放在这些藤蔓上的色彩各异的花朵。这些花朵,在绚烂地绽放后,最后为你结出最美的人生果实来。 ⑥如果你生活困顿迷茫,在人生的路上走得并不顺心遂愿,就该想着适当地调整一下自己的人生态度,或许,你会因此而发现人生最美的风景。
When we talk of plants, most of us will think of things that grow from the ground and have green leaves, but there are plants that do not look or act like other plants. Some of these belong to a special class of plants called fungi. Fungi may appear almost everywhere. They commonly grow in wet places where they call get food and water easily. Because fungi do not have green leaves to make their own food, but fungi must take their food from animals, other plants or water. Some fungi live on dead or rotting(腐烂的)wood, while others grow on living trees or in dirt or moss(苔藓). Mushrooms(蘑茹)are the best-known fungi. There are many kinds of mushrooms appearing in all shapes and sizes. For example, cauliflower(菜花)mushrooms are found in forests from July to October.They can grow to be as heavy as fifty pounds! They grow at the foot of trees Squirrel's(松鼠)bread is another kind of wild mushroom Its appearance and use Call explain its name. These fungi look like small golden cakes Squirrels can easily eat them or carry them off to their hole to eat later. The mushrooms found in food stores are carefully grown by people who know they are safe to eat. People are warned never to touch of taste wild mushrooms because some of them are deadly. Even less dangerous ones cart still make a person very sick..