题干

在区间 [0,2] 中随机地取出一个数 x ,则 x>sin
π
6
的概率是____
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3
4

同类题1

阅读下面一篇散文,回答问题

喜鹊的心情

梁利萍

       ①冬日的午后到底要暖和些。太阳执著地投放着它的热情,使凝冻的寒气不由得松懈了下来。刺骨的冷风似乎也倦了,收敛起它的针芒,丢给这座城市暂时的祥和。在这样一个美妙的时刻,我按捺不住对温暖的渴望,跑到院子里尽兴享受起这不可辜负的阳光来。

       ②没有了叶子的遮蔽,阳光越过杨树光秃秃的枝桠满满地把我包裹起来,透过厚重的棉服依然可以感觉到它的温度。太阳把杨树网络样的枝桠印在老旧的水泥路上,如一幅长长的木刻版画,看着自己的影子移动在斑驳的树影儿间,恍若置身于画中。我正醉心于这自然成就的无华的艺术品,不想头顶上两声脆亮的鸣叫扰了我的奇思妙想,循着声音举目而望,竟是两只漂亮的大喜鹊悠然立于枝头,头和长长的尾羽黑亮亮的如锦缎一般,圆润的肩、腹白得一尘不染,如身着一件质地上好的坎肩,一对漂亮的翅膀轻轻拢在背上,在阳光下闪着幽蓝的珍珠般的光泽,如此雅致得体的礼服不知出自哪位设计师之手。与许多鸟类乐于栖息在远离人群的山林间不同,喜鹊是逐人群而栖的,喜爱筑巢于人类居所旁高大的树枝上,于是在这钢筋水泥林立的北国都市中,喜鹊成了最靓丽的大鸟,又加之其鸣叫声响亮悦耳,有极好的人缘。

       ③喜鹊转动着黑宝石一样的眼睛,望了望树下的不速之客,便昂起头继续忘情地边歌边舞,细长的尾羽摆来摆去,如同挥舞着的指挥棒。这嘹亮的此起彼伏的歌声在灰冷的空气中散开来,搔动着路人的心思,再冷峻的面孔也会幻化出笑容,我的心里也添得了一份意外的喜悦。这城里,喜鹊并不少见,树荫浓密的枝头时常可以看到它们跳动的身影,然而在枯寒萧瑟的隆冬里,我已淡忘了这一年四季固守于此的鸟。环顾四周,成排的树木齐整整地枯败颓秃,喜鹊跃上枝头,举目不见枝茂叶绿、蛾飞虫蠕,我诧异于这快活的大鸟,面对如此的萧条景致,哪里来的心情放声高歌。冬天的日子对于喜鹊这样的留鸟来说并不好过,先不说风景,这寒风冷雪的侵扰就足够难过了,更何况没了小虫和果子,可食用的东西少得可怜,难免忍饥挨饿,若换我处于此境,愁都愁不过来呢,而喜鹊的歌声依旧如春秋季嘹亮、喜悦。喜鹊的心情丝毫不受外部环境的影响,它只是为自己的快乐而歌,也为自己的歌而快乐着,怀一颗快乐的心,所望之处萧条亦非萧条,每一种环境都是景致,每一种生活都可以有快乐。我沿着小路前行,不远处又听到了喜鹊的歌声,原来有这么多喜鹊啊,顿觉心里多了几分快乐。

       ④我刻意留心着所行之处,惊喜地发现无论是在明媚的阳光下,还是浊气弥漫的雾霾天,是暖和的正午,还是日暮的黄昏,只要在树下静静地驻足,总会听到喜鹊脆亮的歌声。原来它一直都在身边,也一直在唱,只是歌声被我心头琐事的杂音遮住了。美妙的声音只有在心静时可抵达于耳、流动于心。心存快乐,便觉处处都有悦耳的歌。

       ⑤自此,有了喜鹊的心情,天天都可听到喜鹊的歌声了。

(选自2014年2月5日《人民日报》)

同类题2

任务型阅读

    Traveling for business or pleasure can easily damage your health. It's easy to fail into the trap of high caloric meals and little exercise.____

    Keep a dictionary on hand

    If you are traveling somewhere with a different language, pack a dictionary and keep it close to help you negotiate(商议)the menu and make healthy food choices.____Look up the words that you don't understand to help you learn about cooking methods and ingredients(材料)so that you can choose healthy food.

    ____

    The more you can research before your trip, the easier it will be to keep a healthy lifestyle while traveling. To stay on track with your food, try to find a nearby grocery store or healthy food store, look up a couple of well rated restaurants that offer some healthy choices, and try to stay somewhere with a fridge or kitchen.

    Walk every day.

    Exploring your destination(目的地)on foot is an amazing way to take some exercise while traveling. Walk through the nature to enjoy its beautiful scenery, listen to the sound of nature and take some wonderful pictures.____

    Rent a bike.

    Cover more ground while burning calories by renting a bike. Many major cities have bike-sharing programs, or you could contact a local bike store to ask about bike rentals.____If you have an open schedule, you could even research bike tours, which are a great way to cover a long distance in a short period of time.

A. Avoid junk food and deep fried food.

B. Research the food and store some upon arrival.

C. Take a bike map of the city, research day trips and get exploring.

D. If you are exercising while traveling, make sure to take in extra water.

E. Here are some healthy travel tips which will keep you in good health.

F. You can't avoid deep fried food if you don't know that they're in there!

G. This is also a great way to find hidden attractions that aren't in the travel guides.