题目

下图为白细胞与血管内皮细胞之间识别、黏着后，白细胞迁移并穿过血管壁进入炎症组织的示意图，下列叙述错误的是（）①内皮细胞识别结合白细胞膜上的糖蛋白，使白细胞黏着 ②白细胞在血管内黏着、迁移、穿过血管壁需要消耗 ATP ③黏着、迁移过程中白细胞需进行基因的选择性表达 ④细胞利用细胞膜的选择透过性穿过血管壁进入炎症组织 ⑤迁移过程中细胞的变形与运动与细胞骨架有密切关系 A . ②③ B . ② C . ④⑤ D . ④A good way to pass an exam is to work hard every day in a year. You may fail in an exam if you are lazy for most of the year and then work hard only a few days before the exam. If you want to be good at English, you have to read English stories and speak English as much as possible. A few days before the exam you should go to bed early. Do not go to bed late at night. Before you start the exam, read carefully over the question papers, and try to understand the exact meaning of each question. When you have at last finished your exam, read over your answers. Correct the mistakes if there are any and be sure that you don’t miss anything out 1．If people want to do well in an exam, they have to work hard _____________.     A．every day in a year                       B．for most of the month     C．for only a few days                      D．late at night 2．If people want to learn English well, they ____________________.     A．only need to learn grammar              B．must often practice English     C．have to go to England                   D．should go to bed early 3．It is important to ____________________a few days before the exam.     A．play too much                         B．have a good rest     C．read the question papers                 D．have a good drink 4．When people have finished the exam, they should__________________.     A．stand up and leave at once              B．answer a few more questions C．make sure they don’t miss anything out    D．leave some mistakes on the question paper 5．The best title of the passage is “________________”.     A．An important exam                   B．An easy exam     C．Get ready for an exam                D．How to pass an exam