题目

Reading is very important to help you learn English. To learn as much as you can from reading, you need to read different kinds of English. This book provides not only different kinds of English but also a good way to check your reading ability. There are four parts in the book: Part 1 is Messages: In this part somebody wants to wad（填充）information in writing to somebody else. There is a test on timetables and a test on text messages. Part 2 is People: In this part all the tests are about people. For example, there is an informal letter between friends. There is formal English iIAPs 是细胞内一种控制细胞凋亡的物质，其作用原理是与细胞凋亡酶结合从而达到抑制细胞凋亡的目的。IAPs 的核心结构是RING 区域，如果去掉该区域，则能有效地促进更多的细胞凋亡。下列相关说法错误的是（   ）A．细胞凋亡是由基因决定的细胞程序性死亡B．去掉癌细胞中IAPs 的RING 区域，可有效促进癌细胞凋亡C．IAPs的合成可以不受基因的控制D．衰老细胞和被病原体感染的细胞的清除，也是通过细胞凋亡完成的