题干

如图所示正三棱柱的主视图是(   )

A:

B:

C:

D:

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答案(点此获取答案解析)

B

同类题4

阅读【甲】【乙】两段选文,完成下题。

【甲】吴广素爱人,士卒多为用者。将尉醉,广故数言欲亡,忿恚尉,令辱之,以激怒其众。尉果笞广。尉剑挺,广起,夺而杀尉。陈胜佐之,并杀两尉。召令徒属曰:“公等遇雨,皆已失期,失期当斩。藉第令毋斩,而戍死者固十六七。且壮士不死即已,死即举大名耳,王侯将相宁有种乎!”徒属皆曰:“敬受命。”乃诈称公子扶苏、项燕,从民欲也。袒右,称大楚。为坛而盟,祭以尉首。陈胜自立为将军,吴广为都尉。攻大泽乡,收而攻蕲。蕲下,乃令符离人葛婴将兵徇蕲以东。攻銍、酆、苦、柘、谯皆下之。行收兵。比至陈,车六七百乘,骑千余,卒数万人。

【乙】秦二世元年七月,陈胜等起大泽中。其九月,会稽守通谓梁曰:“江西皆反,此亦天亡秦之时也。吾闻先即制人,后则为人所制。吾欲发兵,使公及桓楚将。”是时桓楚亡在泽中。梁曰:“桓楚亡,人莫知其处,独籍知之耳。”梁乃出,诫籍持剑居外待。梁复入,与守坐,曰:“请召籍,使受命召桓楚。”守曰:“诺。”梁召籍入。须臾,梁眴籍曰:“可行矣!”于是籍遂拔剑斩守头。项梁持守头,佩其印绶。门下大惊,扰乱,籍所击杀数十百人。一府中皆慴伏,莫敢起……于是梁为会稽守,籍为裨将,徇下县。

(节选自《史记·项羽本纪》)

【注】①会稽守:会稽郡的郡守。②梁:项梁,是项羽的叔父。③籍:项籍,字羽,所以又称项羽。④眴:以目示意,使眼色。

同类题5

阅读理解

    Lagoon Bar, Iceland

    Blue Lagoon in Iceland is truly the place where you can get rid of all troubles. Here the warmth of hot springs gets you close to nature. A wonderful bar is opened among the hot springs. While you're sitting in the hot water, waitresses bring you a range of cocktails.

    What to order: cocktail “Blue Lagoon” and white wine.

    Baobab Tree Bar Wine Cellar, South Africa

    In the hollow (洞) of a huge 6,000-year-old baobab tree you can not only drink a cocktail, but also rest from the heat of Limpopo Province. Once this safe heaven was known only to the Bushmen, but now this ancient tree is the tourist destination for all kinds of tourists.

    What to order: anything in a glass.

    The Birdsville Hotel and Pub, Australia

    At the edge of the Simpson Desert, among the sand dunes (沙丘), which are the favorite spot for the mice, there is a hotel and a pub. The walls of this bar are decorated with old hats and posters of beer, the oldest of which dates from 1884. Most visitors of this building are the amateurs of racing. They come to this village for the September competition. However, the pub is not empty also on other months: the airstrip (飞机跑道) is located nearby, so those who get off the plane are going to have a glass or two of beer first.

    What to order: a pint of beer.

    Floyd's Pelican Bar, Jamaica

    It appears that these huge palm leaves and trunks fell into the ocean long time ago. They floated on the waves and then piled up year by year, sticking out of the ocean. That's probably how the Pelican Bar, located about a mile from the southwest coast of Jamaica, is built on. Some of its visitors have no room to be fitted inside the bar, and they just drink standing in waist-deep water.

    What to order: cocktail “Pelican Perfection”.