题干

把下面的语句组成语意连贯的一段话,顺序排列最恰当的一项是(  )

瘦肉精是一类动物用药, 。 

①将瘦肉精添加于饲料中

②可以增加动物的瘦肉量、减少饲料使用、使肉品提早上市、降低成本

③有数种药物被称为瘦肉精

④例如莱克多巴胺及克伦特罗等

⑤各国开放使用的标准不一

⑥但因为考虑对人体会产生副作用

A:③④①②⑥⑤

B:①③⑤④⑥②

C:②⑤④③⑥①

D:①④③⑥②⑤

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答案(点此获取答案解析)

A

同类题1

阅读下面的文言文,完成小题。
                                                                                                              (一)
        齐有甄彬者,有器业。尝以一束苎,于荆州长沙西库质钱。后赎苎,于束中得金五两,以手巾裹之。彬得金,送还西库。道人大惊曰:“近有人以金质钱,时忽遽,不记录。檀越乃能见归,恐古今未之有也。”辄以金之半仰酬,往复十余,坚然不受。因咏曰:“五月披羊裘负薪,岂拾遗者也?”彬后为郫令,将行,辞太祖。时同列五人,上诫以廉慎。至于彬,独曰:“卿昔有还金之美,故不复以此诫也。”
                                                                                                               (二)
         公孙仪相鲁而嗜鱼,一国尽争买鱼而献之,公仪子不受。其弟子谏曰:“夫子嗜鱼而不受者,何也?”对曰:“夫唯嗜鱼,故不受也。夫即受鱼,必有下人之色;有下人之色,将枉于法;枉于法,则免于相。虽嗜鱼,此不必致我鱼,我又不能自给鱼。即无受鱼而不免于相,虽嗜鱼,我能常自给鱼。”此明夫恃人不如自恃也。
〔注释〕①器业:高尚的品质和出色的才能。②苎zhù:苎麻。③遽:匆忙。④檀越:指“施主”。⑤郫pí:地名,今四川境内。⑥公孙仪:春秋时鲁穆公的相。⑦下人:迁就他人。                   

同类题2

阅读理解,请阅读材料,根据其内容从A.B.C三个选项中选择最正确的答案填空。

There is little rain in desert. Because deserts are so dry, they have no "quilt" to help stop the soil from going away. As a result, they may get very hot during the day with the sun shining, but don't hold the heat overnight. Many deserts can quickly get cold once the sun goes down. Some deserts can reach temperatures of over 100 degrees F during the day and then drop below freezing (32 degrees F) during the night.

The largest hot and dry desert in the world is the Sahara Desert in Northern Africa. The Sahara is a sandy desert with great sand hills. It covers over 3 million square miles of Africa. Other large deserts include the Arabian Desert in the Middle East, the Gobi Desert in Northern China and Mongolia, and Kalahari Desert in Africa.

Animals that live in the desert are also used to needing little water. Many get all the water they need from the food they eat. Other animals keep water that they can use later. The camel stores up fat in its hump while other animals keep something they need in their tails.

Only certain types of plants can live in the terrible environment of the desert. You won't see a lot of tall trees in the desert. Most plants have a way to keep water in their leaves, or trunks so they can live a long time without water.

Now deserts cover around 20% of the world's land, but they are growing. This is called desertification and is caused by different reasons including human activities. The Sahara Desert is growing larger and larger each year. What should we do with it ?


同类题5

随着亚投行的建立以及“一带一路”构想的落实,亚洲打造“命运共同体”已找到更为清晰的实现路径。阅读材料,回答问题。

材料一

图甲                                        图乙

注:2014年世行和亚开行向亚太地区提供的贷款分别是168.47亿美元和85.42美元。中国倡议筹建的亚投行,将向亚太地区国家基础设施建设提供资金支持。

材料二  亚太地区是全球经济最活跃的地区之一。亚投行的建立,旨在合作共赢,共谋发展。对一些发展中国家而言,基础设施建设是激发自身经济潜力的重要手段,改善基础设施将带动经济持续较快发展;对一些发达国家来说,将扩大对投资品的需求,带动其经济提速;对本地区整体而言,互联互通将增强自我发展能力,为经济发展注入持久动力,并带动世界经济复苏;对中国而言,“走出去”是构建开放型经济新体制的重要举措,扩大对外投资成为国家下一阶段的战略布局,而且中国在公路、桥梁、隧道、铁路等方面的工程建造能力在世界上已是首屈一指,中国相关产业期望通过这一平台更快地走向国际。

材料三  近年来随着我国经济社会的发展,我国总体生育率降到更替水平以下,目前为1.5~1.6,人口总量虽然保持持续增长,但惯性趋弱;人口老龄化速度加快,2013年60岁及以上老年人数量已超过2个亿,本世纪30年代中期占总人口的比例将从目前的1/7提高到1/4;独生子女家庭1.5亿多户,独居老人的比例提高,家庭的传统功能有所弱化;城乡居民生育意愿发生了很大变化,随着经济社会的发展和群众生活水平的提高,少生优生、优育优教的生育观念正在形成。这些因素都从客观上推动了我国计划生育的调整。

2015年10月29日闭幕的十八届五中全会公报确定,坚持计划生育的基本国策,完善人口发展战略,全面实施一对夫妇可生育两个孩子政策,积极开展应对人口老龄化行动。