题干

星期天,小林同学回家发现自家田里的小麦出现大面积倒伏现象,就向其父母提出了一条合理化建议:明年应在小麦生长期增施抗倒伏的化肥,你认为增施的化肥是(    )

A:NH4NO3

B:CO(NH22

C:Ca(H2PO42

D:KCl

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D

同类题1

任务型阅读

How to Pick the Perfect Family Tent

    People like camping. But to ensure everyone has a good time, choosing the right family tent is important. ____ Here's how to choose the perfect tent for your family.

    First of all, consider the size of the camps. Generally speaking, four-and-six-person tents are popular with families. ____ But a couple of features(特点)can make all the difference. For families with small children, a tent with a single entrance is a better choice. This makes it easier to keep track of who's coming and going. Of course, two doors can offer added more convenience.

    Some tents require two full-grown adults to set them up. ____ Be sure to take into account the setup and breakdown needs of any model you're considering. It may be necessary to go with a smaller model, or even two smaller tents, rather than one large tent for your family.

____ Or, if friends have a tent, see if you can borrow it for an overnight in your backyard. You'll quickly discover what you like and don't like.

    As an alternative, many outdoor shops have rental departments. Do your research to determine what style and size you think would work best, and find out if you can rent that model or one that's similar. Finally, if you are in a rush, ask if you can climb inside the tent at the store. ____

A. Getting in and out of the tent sounds basic.

B. To save money, you can make one on your own.

C. But you can turn to anyone for help when necessary.

D. It could be a problem if you're the only adult when camping.

E. Take the tent you are considering out for a “test drive” before you buy.

F. It's your home away from home, and the place where you'll sleep and relax.

G. This will give you a chance to assess all the features up close and in person.

同类题4

阅读下文,回答问题

一夜能走多远

    那年我高考落榜,心情糟糕。我想出去打工,多挣点钱给父母,或许那样能弥补我对他们的愧疚。父亲说,等把地里农活儿忙完再做打算吧。

    那时候麦子已经收完,妈妈却病倒了,我家还有一块地没种上苞米。夜里落了一场透地雨,正是种苞米的良机,第二天中午,我和父亲出 发了。

    种子盛在塑料桶里,父亲刨坑我点种子,每个坑两粒种子。农历五月毒辣辣的阳光似乎要把昨夜的雨水全部收回,地面热得像蒸笼,我汗流浃背,父亲也直喘粗气。太阳落山的时候我已经筋疲力尽,口干舌燥。我们还有四垄地没种完,种子却用光了。

    我如释重负地对父亲说,正好天要黑了,咱们收工,明天再带种子来吧。父亲没说话,把锄头藏在地头的麦秸垛里,我们回家了。

    回到家,我喝了水,舒服地躺在炕上想美美地睡上一觉,却看见父亲又在弄苞米种子,我问不是明天才下种吗?现在准备有什么用?父亲笑着说,这块地今晚必须种完,否则将来会欠收。我觉得不可思议,不就差一宿吗?父亲说我们打个盹儿,一宿就过去了,但是种下去的种子不睡觉啊,同地块的苞米晚种一宿,产量差别可就大了。

    见我半信半疑,父亲指指屋檐下挂的苞米说,你看吧,这些和囤里的都是这块地的收成,前后就差一天,我拿起檐下的苞米穗与囤里的比了比,短3厘米左右!我又拿了几个比较,无一例外,檐下的苞米个头普遍偏小!

    原来,去年这片地还没有播种完,突然下了场雨,无法干活,地北头这5垄比其他地块晚种了一天。

    我被这个事实惊呆了。父亲说,大片地玉米同时吐蕊秀穗时,晚种的这几垄还未吐蕊,错过了最好的授粉期,所以收成差了许多。没想到,短短一天差到如此明显。

    一个黑夜,一个白天对于我们人类只算一个片刻,但是对于生命周期只有70多天的苞米,的确是一个不短的时间。我们看似漫长的人生不也像一粒种子般短暂吗?刚开始就落后别人一步,如不努力追赶,到后来就像檐下的苞米一样…那天傍晚,我和父亲又回到田里,把那片地全部种完,回到家时已经满天星斗。

    那年秋天我没有外出打工,而是选择了复读。经过一年的努力,我考上了一个不错的大学。一晃12年过去了,我有了稳定的工作,而与我一样落榜外出打工的几个同学,如今还辗转在烈日下的工地上辛苦地劳作,经常为讨要工钱而苦恼。

    那些装满了理想与希望的种子,短短一夜间,已经吸足了水分,早已迈开了“人生”的脚步,一旦错过,机会永不再来。