根据《工程造价咨询企业管理办法》，乙级工程造价咨询企业可以从事工程造价( )万元以

The UK has a well-respected higher education system and some of the top universities and research institutions in the world. But to those who are new to it all, it can he overwhelming and sometimes (47)
October is-usually the busiest month in the academic calendar. Universities have something called Freshets’ Week for their newcomers. It’s a great (48) to make new friends, join lots of clubs and (49) into university life.
However, having just left the comfort of home and all your friends behind, the (50) of meeting lots of strangers in big halls can be nerve-wracking(让人伤脑筋的). Where do you start Who should you make friends with Which clubs should you join
Luckily, there will be thousands of others in the same boat as you worrying about starting their university social life on the right foot. So just take it all in (51) . Don’t rush into anything that you’ll regret for the next three years. Here are some top tips from past students on how to (52) Freshers’ Week:
Blend in. Make sure you are (53) of British social etiquette(社交礼仪). Have a few wine glasses and snacks handy for your housemates and friends.
Be hospitable(好客的). Sometimes cups of tea or even slices of toast can give you a head start in making friends.
Be (54) . The more active you are, the more likely you’ll be to meet new people than if you’re someone who never leaves their room.
Bring a doorstop. Keep your door open when you’re in and that sends (55) messages to your neighbours that you’re friendly.
So with a bit of clever planning and (56) , Freshers’ Week can give you a great start to your university life and soon you’ll be passing on your wisdom to next year’s new recruits.

• A) settleF) aware K) positive
• B) dealG) quietly L) negative
• C) sociableH) slowlyM) opportunity
• D) confusingI) encouragement N) survive
• E) familiarJ) motivationO) prospect

偏二甲肼是火箭推进器的常用燃料，它的化学式为C₂H₈N₂，下列说法正确是（　　）

A．偏二甲肼的相对分子质量为60g

B．偏二甲肼中含有氮分子

C．偏二甲肼中碳、氢、氮的质量比为1：4：1

D．偏二甲肼由碳、氢、氮三种元素组成

有机物X是有机合成工业中一种重要的中间体。X可以由有机物A经过一系列反应制得，也可由另一种有机物Y在一定条件下制得。合成路径如下图所示：

已知：①

②Y分子中C、H、O（不含其它元素）的个数比为1：1：1，且Y的相对分子质量的范围在80-160之间。

③Y是一种二元酸，且能使Br₂/CCl₄褪色。

④E和X中都含有五元环。

请回答以下问题：

（1）请指出反应类型：反应②______________，反应⑤_____________。

（2）Y的分子式为_______________；X的结构简式为_______________。

（3）反应①和②的顺序不能调换，请简述理由__________________________________。

（4）化合物D在浓H₂SO₄催化作用下能生成一种高分子化合物，请写出该反应方程式

______________________________________________________。

（5）化合物D有许多同分异构体，其中同分异构体D₁和D₂都满足以下条件：分子中含有酯基结构，且D₁和D₂都是二元酸。请写出D₁、D₂的结构简式：_____________，

_____________。

孔子，名丘，字仲尼，鲁国人，（）家创始人。

A、道

B、法

C、儒

用法定盈余公积转增资本或弥补亏损，均不导致所有者权益总额发生变化。( )