下列命题：①设 $a,b$ 是非零实数，若 $a<b$ ，则 $a{b}^2<a^{2}b$ ；②若 $a<b<0$ 则 $\frac{1}{a}>\frac{1}{b}$ ；③函数 $y=\frac{x^2+3}{\sqrt{x^2+2}}$ 的最小值是2.其中真命题的序号是____．

二次函数y=ax²+bx+c（a≠0）的图象如图所示，给出下列五条结论：

①abc＜0；②4ac﹣b²＜0；③4a+c＜2b；④3b+2c＜0；⑤m（am+b）+b＜a（m≠﹣1）

其中正确的结论是____（把所有正确的结论的序号都填写在横线上）

2010年，我国就业形势依然十分严峻，并且劳动力结构性矛盾突出，表现在不同质量的劳动力供求状况不同，非熟练、低技能劳动力供过于求，而熟练、高技能、知识型劳动力供不应求。针对非熟练、低技能劳动力供过于求的状况，必须      
①加强劳动者技能培养     ②由国家统一分配劳动力
③加强劳动力市场的培养建设④建立和完善劳动者自主择业、市场调节就业和政府促进就业的机制

   Sometimes people come into your life and you know at once that they were sure to be there. They serve some sort of purpose, teach you a lesson or help find out who you are or who you want to become. You never know who these people may be: your classmate, neighbor, teacher, long-lost friend or even a real stranger. But you know that every moment they will affect your life in some serious ways.
   Somethings happen to you. At the time they may seem terrible, painful (痛苦的) and unfair. But later you realize that without getting over those difficulties you would have never realized your further ability and strength. Everything happens for a reason and nothing happens by chance or with good or bad luck.
   The people you meet affect your life, and the successes and failure (失败) you experience, create who you are. Even the bad experiences can be learned from. In fact, they are probably the most poignant and important ones.
   Enjoy every day even every moment and take from it everything that you possibly can, for you may never be able to experience it again. Talks to people you have never talked to before, and really listen. You should set your sights high, hold your head up, tell yourself you are a great one and believe in yourself.
   You can make your life anything you wish. Create your own life and then go out and live it.

阅读理解

    Singapore's public transport system(公共交通系统)is one of the best in the world, so you should have no problem finding your way around like a local. There are three main forms of public transport that you would find in any other major city--trains, buses and taxis.

TRAINS

    Trains run from 6: 00 am to midnight. Single trip tickets start at 80 cents. If you buy an EZ-link card for MYMI5, you can ride the trains and buses all you like.

    If you need more information, just call Transit Link on 1800 767 4333.

BUSES

    There are several bus services in Singapore and fares start at 80cents. Be sure to always ask the driver the cost of your ticket as he cannot give changes.

    If you need help, just call Transit Link on 1800 767 4333.

TAXIS

    There are three main taxi companies--city Cab(6552 2222), Comfort(6552 1111) and Tibs (6552 8888). Booking can also be made easily by calling the numbers listed above.

RENTAL CARS

    Driving in Singapore is a pleasure and if you like to travel at your own pace, renting a car is a good choice. Renting takes away the hassle of getting to places around Singapore. Just sit back and enjoy the city. It also means you'll get to see a lot more that a train or a bus won't let you see.

    For car rental, call Avis on +656737 1668