明清时期戏曲服饰的特点主要有：一是（）；二是（）；三是（）；四是（）。在穿戴的原则上

阅读理解.

      Children in America like Halloween (万圣节前夕) very much. In the evening on October 31.

they put on special (特别的) clothes. Sometimes they dress like witches (巫婆) and ghosts (鬼).

Sometimes they dress like kings and queens. They go to their neighbours' houses and knock on the

door. A neighbour opens the door. The children say, "Trick or treat (不给糖果就捣乱)." The

neighbour gives them chocolate or some fruit. Sometimes people don't give the children any food.

Then the children play a trick on them. They put soap on their windows. Children like this special

day. They like their large bags of sweets.

1. Halloween is celebrated (庆祝) by _____ on _____.

    A. adults (成年人); December 31

    B. the old; November 31

    C. young people; September 31

    D. children; October 31

2. Children wear _____ to celebrate Halloween.

    A. school uniforms (校服)

    B. nothing

    C. special clothes

    D. suits

3. If they can't get what they want from their neighbours, they sometimes _____.

    A. put soap on their windows

    B. break their windows

    C. put paper on their windows

    D. draw pictures on their windows

4. Children go to their neighbours' houses and knock on the doors, asking for _____.

    A. sweets

    B. chocolate

    C. fruit

    D. all of the above

5. Children like Halloween very much because they can _____.

    A. play tricks on their neighbours

    B. get something delicious to eat

    C. put soap on their neighbours' windows

    D. have a day off school

瑞氏染色时，如果pH偏碱，红细胞将会出现（）

A.粉红色

B.蓝色

C.橙色

D.黄色

E.棕色

某人从40岁开始储蓄养老金，每年年末向银行存入5000元，问60岁退休时可提取的退休金为（）。（年利率为6%）

A．106000.00元

B．116543.22元

C．194963.61元

D．139872.96元

阅读材料并结合背景知识回答问题：
材料一
鸦片战争中，英国侵略者的大炮将沉睡的中国人震醒，而中国的惨败又被大多数国人视为奇耻大辱。战败后的中国，内忧外患纷至沓来，社会危机四伏。面对这种内外交困的局面，清政府统治阶级中的有识之士……提出了一系列社会改革方案。……林则徐认为：“黄河南行，非河之性，故屡治而屡为患。”……林则徐提出，实行“重商力”，要有好的政策。中国还应积极开展对外贸易，他主张对外国商人，应坚持“守法者来之，抗法者去之”的原则，坚决反对顽固派闭关禁海、与外国断绝往来的愚蠢作法。林则徐、魏源等力主允许民间开矿，反对政府独占。
材料二
姚莹认为“海外事势夷情，平日置之不讲，故一旦海船猝来，惊若鬼神，畏如雷霆。夫是以愤败至此耳……自古兵法，先审敌情，未有知己知彼而不胜，愤愤从事而不败者也”。……林则徐在抗英作战中，承认英军火炮能“远及十里之外，若我炮不能及彼，彼炮先已及我，是器不良也”……“是技不熟也”。……针对顽固派把西方先进技术说成是“奇技淫巧”“形器之末”等谬论，魏源指出“有用之物，即奇技而非淫巧”，有使用价值的东西，就不是“形器之末”，而是了不起的器物。对有用之物，学了也不至于败坏人心。他认为“尽转外国之长技，为中国之长技”可以发展生产，富国强兵。
——摘自《中国近代军事经济史》
请回答：

中国有识之士提出哪几个方面来发展经济“师夷长技以制夷”的主要内容有哪些

下列因素中哪项不是牙髓感染的途径（）

A.牙髓暴露

B.牙本质小管

C.牙周途径

D.血源感染

E.化学刺激