题干

陆游的诗句“花气袭人知骤暖”,“花气袭人”说明分子在做 ____,“知骤暖”指当春天温度骤然升高时,花香会特别浓郁,这说明温度越高, ____越剧烈.

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答案(点此获取答案解析)

无规则运动,分子热运动

同类题2

Fill in the blanks with proper words(在短文的空格内填入适当的词,使其内容通顺。每空格限填一词,首字母已给)

explains      common    used    change      besides     usually 

    ZhangMing, a college graduate from Shandong, created a 9-page"Wechatguide". With drawings and simple words, the step-by-step guide e____ how to send messages, take pictures and make video calls. Zhang made the guide for his parents. "My parents are getting old. They need an easy way to learn how to use technology, "he said.

    Zhang's experience is c____ nowadays.Worldwide,40percent of parents learn about new technologies, including computers, mobile Internet and social media, from their children, according to a study from the International Communication Association in 2017.

    Parents u ____ to teach their kids about almost everything. Now for the first time, the teachers become the students, and the students turn into the teachers.

    The c____ of the roles comes from the rapid development of society and technology says Zhou Xiaohong, a sociology professor from Nanjing University. Zhou said the Internet and other forms of media give children ways to get information b____  from asking older generations. Therefore, in the age of information, it's possible that children know more than their parents do.

    According to the China Internet Network Information Center, 56.7 percent of Internet users and 67.2 percent of social media users in China are under the age of 30. The younger generation u____ acts as a link between their family and the new environment. But when they teach their parents new technologies, parents can connect to the new world by themselves, noted Zhou.

    In Zhang Ming's eyes, teaching his parents about Wechat brings him c____ to his parents."People can communicate more by using new technology. Why should we keep our parents out? "said Zhang.

同类题4

阅读下面文字,完成下列各题。

海洋是未来的粮仓

       ①人口剧增,资源短缺,这是当今人类面临的最严重的环境问题之一。显然,能否妥善地解决这一问题,直接关系到人类未来的生死存亡。

       ②资源短缺的表现之一,是可耕土地资源不足,粮食生产的增长赶不上人口的增长。正是出于这样的考虑,许多人纷纷发出警告:地球将无法养活超过100亿的人口。然而,一些乐观的人士反对这种危言耸听的说法。他们认为,虽然陆地上可耕地的开发已近极限,但地球还有广阔的海洋可供开发,大海完全有可能成为人类未来的粮仓。

       ③当然,海洋所能提供给我们的并不是传统意义上的粮食﹣﹣大米、小麦和玉米等,而是广义的粮食﹣﹣其他的能够满足人类营养需要的食物。一些海洋学家指出:仅仅是位于近海水域自然生长的海藻,每年的生长量就已相当于目前世界小麦年产量的15倍。如果把这些藻类加工成食品,就可以为人类提供足够的蛋白质。

       ④其实,把藻类作为食品,我们并不陌生。仅以我国沿海来说,人们比较熟悉的可食用藻类就有:褐藻类的海带、裙带菜、羊栖菜、马尾藻;红藻类的紫菜、鹧鸪菜、石花菜;绿藻类的石莼、浒苔等。它们在人工的精心养殖下,产量正在不断翻新。其中仅海带一种,目前年产量就比早先的野生状态提高了2000多倍,可见增产潜力是多么巨大!在国外,人们还培育出一种藻类新品种,据说在1公顷水面上生产的这种藻类,经加工可获得20吨蛋白质、多种维生素以及人体所需的矿物质。这相当于陆地上耕种40公顷土地生产的大豆所能提供的同类营养物。

       ⑤除海藻类,海洋中还有丰富的肉眼看不见的浮游生物。有人做过计算,在不破坏生态平衡的前提下,若能把它们捕捞出来,加工成食品,足可满足300亿人的需要。

       ⑥至于海洋中众多的鱼虾,则更是人们熟悉的食物。尽管近海的鱼虾捕捞已近极限,但我们还可以开辟远洋渔场,发展深海渔业。例如南极的磷虾,每年的产量可高达50亿吨,我们只要捕获其中的1亿﹣1.5亿吨,就比当今全世界一年的捕鱼量多出1倍以上。何况,在深海和远洋中还有许许多多尚未被我们充分开发利用的海洋生物,其巨大潜力是不言而喻的。

       ⑦综上所述,说大海是人类未来的粮仓,一点也不夸张。