若二次根式$\sqrt{x+3}$的值等于0,则x=____．

2016年2月17日，国务院发布的《关于进一步健全特困人员救助供养制度的意见》强调，将符合条件的特困人员全部纳入救助供养范围，做到应救尽救、应养尽养。这（    ）

①是落实以人为本的科学发展观的体现                    ②说明关爱特困人员是政府义不容辞的责任，与未成年人无关

③是构建和谐社会、维护公平正义的重要举措        ④是强国之路，是国家发展进步的活力源泉

    Mr. Jackson is a painter. He likes children very much. He always teaches children to paint pictures on weekends.

    Spring is coming Mr. Jackson decided to take children into the garden to paint the beautiful flowers .He took the children to a small garden near the school. The garden was full of spring flowers. Mr. Jackson and children began to paint, but a boy called Andy was just walking around in the garden.

    Two hours later, most of the children finished their pictures. They showed their beautiful pictures to Mr. Jackson. Andy showed his paper to Mr. Jackson, too.

   “What's in the picture?” Mr. Jackson asked angrily. He saw only a piece of white paper .There was nothing on it.

    Andy answered, “I painted some white flowers in the garden and a white bird in the sky.”

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