题目

现在的科技日新月异，各种发明以及高科技产品成了我们生活中不可缺少的东西，如笔记本电脑(laptop)、手机(mobile phone)、MP4、数码相机(digital camera)、数码摄像机(DV)等。请以“My Favourite Invention”为题描述你最喜欢的一种发明并说明理由(至少两个方面)。80—100词。 答案：【答案】My Favourite Invention There are many inventions in the world, but the laptop is my favourite. As a student, I get a lot of help from the computer. With a laptop, we can work, study and entertain ourselves everywhere. A laptop can get to the Internet outside, which enables us to get the latest information whenever we want. I can play games or listen to music when I am tired. It is also在新鲜的血中加入柠檬酸纳，血液分为三层，下列叙述不正确的是（ ）A．上层为血浆 B．上层为血清C．下层为红细胞 D．中层为血小板和白细胞