图片资源测试

http://is1.mzstatic.com/image/thumb/Features69/v4/7b/f2/98/7bf29824-0c78-4bc1-f641-6d572ac1bf11/source/1400x350bb.jpeg

http://is2.mzstatic.com/image/thumb/Features5/v4/63/7d/01/637d0173-fe15-6efd-1688-29f02a9f50d9/source/1400x350bb.jpeg

http://is3.mzstatic.com/image/thumb/Features5/v4/3f/3e/51/3f3e512c-cddc-6b6b-a3ee-b7105e76f0a2/source/1400x350bb.jpeg

http://is4.mzstatic.com/image/thumb/Features7/v4/7d/bd/92/7dbd9203-3bf1-36e8-4f04-dd557ddb2374/source/1400x350bb.jpeg

http://is5.mzstatic.com/image/thumb/Features7/v4/64/74/3a/64743a07-83c2-63ac-f067-af06c5193be4/source/1400x350bb.jpeg

https://apps.itunes.apple.com/files/desktop-music-app/assets/loading/StoreIndetermProgress-fa7a187554cca700778f7952edc30277.png （Loading icon）

http://a1.mzstatic.com/us/r30/Features49/v4/ff/fb/98/fffb9889-7997-4f2e-82f9-01b1fe8985dc/flowcase_410_200_2x.jpeg

http://a2.mzstatic.com/us/r30/Features69/v4/d7/1c/a3/d71ca37d-eaf5-e0c5-afb1-bab0cd66eddb/flowcase_410_200_2x.jpeg

http://a3.mzstatic.com/us/r30/Purple3/v4/dd/0c/ef/dd0cefa2-d257-ef80-42c9-0ab7036f7561/icon128x128.png

http://a4.mzstatic.com/us/r30/Features6/v4/c2/2d/1a/c22d1aad-9eb3-136a-2450-c51f4757b80d/flowcase_410_200_2x.jpeg

http://a5.mzstatic.com/us/r30/Features69/v4/2f/d7/c3/2fd7c3c0-c509-d404-1c65-081af0b8f0c2/image-410x200.jpeg

Mac App Store 下载测试

http://osxapps.itunes.apple.com/apple-assets-us-std-000001/Purple69/v4/e8/11/8f/e8118f3a-7c0e-2bf2-ca7b-719c90d4ffcb/encrypted7964864115230786182.pkg （无需安装也无法安装）

（在浏览器中测试，可下载即可用，可以多测试几个 IP 以获得最佳体验。）