题目

下列实验中，对水的主要作用分析不全面的是(资料:生石灰与水反应:CaO+ H2O=Ca(OH)2 ， 反应为放热反应)（） A . a图中的水便于观察烧瓶内气压的变化 B . b图烧杯中的水不仅可以提供反应所需热量，还可以使白磷隔绝空气 C . c图集气瓶中的水可用来排尽其中的空气并可用来观察H2何时收满 D . d图集气瓶中的水可防止高温熔融物溅落炸裂集气瓶底Taking a photo of your food and posting it online is becoming more and more popular. However, not everyone thinks it’s such a good idea. Food photos are popular on social networking sites. People often post pictures of their meals on Facebook or photo sites such as Tumblr and Instagram. Many of the pictures are of delicious-looking food from top-class restaurants. Some people even find it addictive（上瘾的）. “I couldn’t get enough of it. I had to IG (instagram) every single meal,” one food poster wrote. However, not all food photos are so attractive. There are now sites where you can post pictures of terrible-looking food. One such website is saddesklunch.com. Users send pictures of their depressing meals, which include things such as half-eaten bits of chicken and leftover pizza. Sad Desk Lunch was created by office worker Kira Fisher in 2012. At the time, she was working as a video editor in New York. “I was starting at my rather terrible vegetable soup, which I was eating at my desk, and just thought, I can’t believe I’m eating this soup, let alone eating it alone at my desk,” she said. Other similar sites include cooksuck.com, foodporndairy.com and dimlyiitmealsforone. Tumblr.com. Some chefs are trying to stop people photographing food in their restaurants. Gilles Goujon runs a three-star restaurant in southern France. He told news website France TV Info that every time his creations appear on social networks it “takes away the surprise, and a little bit of my intellectual property（知识产权）”.Alexandre Gauthier is the chef at the “Grenouillere” restaurant a “no camera” logo on his menus. “Before, people took pictures of their family in the restaurant; now we take pictures of food... We tweet, we ‘like’（点赞）, we respond to comments, and the dish is cold,” he explained. Will you be taking your camera next time you eat out?【1】On which of the following websites can you probably find photos of tasty food?A. cooksuck.com B. instagram.comC. saddesklunch.com D. foodporndairy.com【2】What’s Gilles Goujon’s attitude towards food photography in restaurants?A. He dislikes it. B. He supports it.C. He is interested in it. D. He is uncertain about it.