问题 问答题 简答题

为什么我的变色片退不下去?

答案

参考答案:

这是变色片的变色原理决定的,变色片所含的变色材料会在多项使用之后逐渐丧失变色能力,导致镜片最后退不回原来的颜色,这个过程约需要2—3年时间。

阅读理解

Some children are born bosses. They have a need to make decisions, manage their environment and lead rather than follow. Too much rule in the hands of the young isn’t healthy for children or the family. Family expert John Taylor says, “Children have secret feelings of weakness. They are always trying to feel safe. ”It’s the parents’ duty-not the child’s-to provide safety.

When a “boss child’’ doesn’t learn limits(限制)at home, troubles will appear outside the family. The child may have trouble obeying(遵守)teachers, for example, or keeping friends. It can be pretty lonely as the top dog if no one likes your ruling ways.

Bossy kids are often unusually bright. Their parents need to be especially careful to manage them. Bossy kids usually work more on the mother. It’s important for both parents to know their child’s weakness, to agree on key rules and to back each up.

Even as you try to be kind—to a point—don’t give up your parental ruling post. Instead, stand your ground by using body language that tells your child who the boss is.

Good manners are important to family. Show a child by example how to ask for something rather than shout orders. Try asking your child to do things that are not too difficult. Then reward(奖励)him with a hug(拥抱)and words such as “Thank you. I like it when you listen to me.” Over time good manners will become associated(联结)with pleasure.

小题1:Is the passage mainly about how to teach children?

小题2:Do boss children usually feel lonely or have a lot of friends?

小题3:Which of the parents should know their child’s weakness?

小题4:Why is it important to teach children good manners?

小题5:What should parents be like to teach a boss child well?

阅读理解与欣赏

提高部分。阅读下文,完成1~4题。

  ①蚯蚓,是一种环节动物,属质足纲寡毛目。

  ②蚯蚓生活在土壤中,以腐殖有机物和泥土为食。凡经它吞入而排出的泥土均成团烂结构,增强了土壤中的透气性和透水性,而且它排出的粪便是一种良好的有机肥料,富有硝酸盐和钾盐,可改变酸性或碱性土壤,使变成中性,对农作物的生长极为有利。因此,自古以来,蚯蚓就被人们誉为“耕耘能手”和改良土壤的“功臣”。

  ③蚯蚓有惊人的消化系统,嗜粪肥和各种有机废物,除玻璃、塑料和金属外,其他垃圾它都“吃”,诸如蛋壳、香蕉皮、硬纸板或下水道中的污物,它都吃得津津有味,而且胃口也大得惊人。美国加利福尼亚州的一座蚯蚓养殖工厂,养殖了5亿条蚯蚓,每天吃掉垃圾200吨,并获得了大量的优质肥料。日本的一家工厂,每年处理木浆残渣需要40万美元,而购进125吨蚯蚓后,不仅及时清理了这些废料,还可以转而将蚯蚓粪便卖给附近的蔬菜农场,很快就收回了成本。所以,蚯蚓既是保护环境、处理城市有机废物的“主力军”,又是优质肥料的天然制造者

  ④蚯蚓含有很高的蛋白质和维生素,因而成为现代化畜牧业、渔业的优良饲料、饵料。近年来,人们把蚯蚓烹调成营养丰富的佳肴。将来蚯蚓有可能成为人类摄食的主要动物蛋白。

  ⑤由此看来,蚯蚓确实是人类的挚友。由于蚯蚓神通广大,又具有分布广、适应性强、繁殖快、易管理等特点,很适合规模养殖利用,让它为人类造福。

1、第②段加粗的“其”指代____________________________。

2、请指出画横线句在第三段中的作用。____________________________。

3、第④段的说明顺序是________________________________。

4、说说第⑤自然段在全文的作用。 ____________________________。