题目

细胞是生物体结构和功能的基本单位。在下列关于细胞基本共性的描述中，正确的是：   ①均具有磷脂双分子层与蛋白质构成的膜结构  ②ATP是所有细胞可直接利用的能源物质 ③都具有内质网作为蛋白质合成的场所        ④遗传信息均储存在脱氧核糖核苷酸分子中 ⑤编码氨基酸的密码子基本相同              ⑥所有生物的新陈代谢都是以细胞为单位进行的 A. ①②⑤⑥      B. ①②④⑤⑥        C. ①②③⑤⑥      D. ①②③④Bob was a gardener and he had no work for a few months. One day he went out to look for a job. While he was walking in the street, he saw a poster at the gate of a big restaurant. It said the restaurant needed to hire（雇佣） a man who could grow flowers and trees well. Bob was so pleased that he went straight to answer it. There Bob was told to go back and get his old working clothes to the office. Bob did so.The boss looked over his working clothes carefully and then decided to let Bob have the job. Bob asked the boss why his working clothes were so important. The boss answered with a smile, "Oh, young man, your working clothes are all with patches(补丁) on the knees. You know, I have dismissed（解雇） two men these days. They had working clothes with patches on the buttocks(臀部). They were too lazy."【小题1】When the boss saw Bob, he ________.A．gave him the job at onceB．liked Bob at onceC．asked Bob to go home to get his working clothesD．liked Bob's clothes【小题2】Bob's new job was________.A．to wash dishes B．to clean the restaurantC．to cook dishes D．to grow flowers and trees【小题3】We may learn that the boss was ________.A．very cleverB．foolishC．very kindD．hardworking