【推荐1】Carbon dioxide, which make a b_____(屏障)between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer. (根据中英文提示填空)

【推荐2】When I arrived in England, I practised speaking English every day to remove the language________ (障碍). (根据汉语提示单词拼写)

【推荐3】Wind ________ (障碍) are a main method to assure traffic safety, especially under the strong cross wind. (根据汉语提示单词拼写)

【推荐1】The new building was built from a design of a famous a________.(根据首字母单词拼写)

【推荐2】I believe every student has unlimited_______(潜能) to be exploited.

【推荐3】There are some security lights with an infrared __________(传感器). (根据汉语提示单词拼写)