题干

下面是轴对称图形的是(   )。

A:

B:

C:

上一题 下一题 0.0难度 选择题 更新时间:2019-12-27 09:02:32

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A

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榴莲

    ①榴莲,是热带一种非常奇特的水果。

    ②榴莲浑身上下长满了扎人的尖刺,它像性格泼辣的妇女,只看一眼,便不想去动它,偏它又散发出一种浓烈已极的香味来引诱你,呼唤你,于是,你会不由自主的向它走近、走近。用撬子战战兢兢在撬开它,躺在坚实果壳里的,是带核的果肉。果肉极香,香味如蛇,绕喉而下,整个人,都被这一股香熏得有点恍恍惚惚的。

    ③选购榴莲,是一门不易掌握的“学问”。根据此中行家指出:要买上好榴莲,要诀有二:一是嗅、二是听。把榴莲捧在手里,将鼻子凑近榴莲,闭上眼睛,全神贯注地,嗅!如果有一缕强烈的香味好像出弦弓箭一样的射入鼻腔内,那么,这榴莲的果肉,必然令人满意。有些榴莲,味道虽好,但是,核很大很大,果肉极薄,不耐咀嚼,亦不能算是上品。所以,嗅了以后,还要听。将香喷喷的榴莲高举至耳朵旁,以手用力摇一摇,如果有细微的响声发出来,表示肉厚核薄,上品也。如果响声太大,便明明白白告诉你,这榴莲核极大,不中吃,倘若嗅时无香而摇时又无声,那么,这榴莲,多半是半生不熟的,千万别买。知易行难,这两个要诀听起来好似很容易,然而,要在香味弥漫的市场里嗅出个别榴莲的味儿、要在闹声喧天的市集里静听个别榴莲的响声,真是谈何容易呀!

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    Did you know that badminton is also a fast-paced competitive sport? Badminton has been a Summer Olympic sport since 1992. Para-badminton will be included in the 2020 Summer Olympic Games in Tokyo. Here's what you need to know if your child is interested in badminton.

    Badminton is played on a 44-foot-long rectangular (矩形的) court that is 17 feet wide for singles and 20 feet wide for doubles. It is divided in the middle by a net placed 5 feet off the ground, like volleyball, not at ground level like tennis.

In competition, each match is a set of three games played to 21 points. There is a one-minute break when a player or team reaches 11 points, and a two-minute break in between the first and second games and the second and third games.

Age kids can start: About 6 years old.

    Best for kids who: Have good skills, are patient and hardworking, and can handle the pressure of one-on-one or two-on-two competition.

Team or individual: Matches can be singles (one-on-one) or doubles (two-on-two).

    Fun fact: Badminton is the only sport that has mixed doubles event in the Olympic Games.

    Costs: Beginners are expected to pay $30 to $40 for an entry-level racquet (球拍). Badminton shoes are similar in price to other athletic shoes. Join a club or team for lessons. A one-hour group lesson for beginners should cost $20 to $25, with costs increasing as your child moves up the ranks. You will also pay entry fees for competitions.

    Time commitment required: Beginners will play for just an hour or two per week.

    Potential for injury: Players have a very low risk of injury. Players who wear glasses should use eye protection.