题干

某化肥说明书的一部分如图.

(1)此包化肥中含氮的质量为____ kg.

(2)该化肥的化学性质为:①与碱性物质混用会因放出____ 气而损失肥效;②____ .

(3)该化肥的物理性质为____ .

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答案(点此获取答案解析)

8,氨,受热易分解,易溶于水

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                                                                                          甲 送东阳马生序(节选)
        余幼时即嗜学。家贫,无从致书以观,每假借于藏书之家,手自笔录,计日以还。天大寒,砚冰坚,手指不可屈伸,弗之怠。录毕,走送之,不敢稍逾约。以是人多以书假余,余因得遍观群书。既加冠,益慕圣贤之道。又患无硕师名人与游,尝趋百里外,从乡之先达执经叩问。先达德隆望尊,门人弟子填其室,未尝稍降辞色。余立侍左右,援疑质理,俯身倾耳以请;或遇其叱咄,色愈恭,礼愈至,不敢出一言以复;俟其欣悦,则又请焉。故余虽愚,卒获有所闻。
                                                                                                    乙 孙权劝学
        初,权谓吕蒙曰:“卿今当涂掌事,不可不学!”蒙辞以军中多务。权日:“孤岂欲卿治经为博士邪!但当涉猎,见往事耳。卿言多务,孰若孤?孤常读书,自以为大有所益。”蒙乃始就学。及鲁肃过寻阳,与蒙论议,大惊曰:“卿今者才略,非复吴下阿蒙!”蒙曰:“士别三日,即更刮目相待,大兄何见事之晚乎!”肃遂拜蒙母,结友而别。
                                                                                               丙行路难(其一)(李白)
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                                                       欲渡黄河冰塞川,将登太行雪满山。闲来垂钓碧溪上,忽复乘舟梦日边。
                                                       行路难!行路难!多歧路,今安在?长风破浪会有时,直挂云帆济沧海。

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Dog parks on Long Island

    For dog lovers, parking dogs sometimes might be a problem. From entertainment facilities to park tips, we've collected everything you need to know before you take your pet for an afternoon of outdoor fun.

    ⒈Amagansett, Napeague State Park

Amagansett, Napeague State Park, Route 27. Dogs are allowed on a leash(狗链)in this undeveloped park, which includes trails, wooded areas and roads. Access to the beach. No water source or public bathrooms.

    ⒉East Meadow, Eisenhower Park

East Meadow, Eisenhower Park, Salisbury Park Drive and Stewart Avenue, East Meadow. In addition to dhaded seating, each run has a water source. Permits are free, but required.

    ⒊Calverton, Isaac Park

Calverton, Isaac Park, on the Grumman Site, within Veteran's Memorial Park. Separated by large and small dogs, this half-acre plot has shade trees, seating and access to the beach. Bring your own water' leashed dog can be walked on some trails; Town of Riverhead residents only.

    ⒋Broolhaven, Robinson Duck Farm Dog Park

Broolhaven, Robinson Duck Farm Dog Park, 2903 Montauk Hwy. This 3-acre park has areas for large and small dogs, but no water source. Large-dog area includes a training course. $18 yearly pass for village residents.

    ⒌Massapequa, Clocks Boulevard Park

Massapequa, Clocks Boulevard Park, off Louden Avenue and Sunrise Highway. At larger than 1 acre, this dog park has lots of room to run and wooded areas for shade. Open dawn to dusk. Water sources are available in both the large- and small-dog areas. It has enough parking and seating. Open to Town of Oyster Bay residents.