2019年12月英语四级卷一卷二卷三听力原文 2019下半年英语四级写作范文真题（13）

仔细阅读（第一套）：

仔细阅读（第二套）：

仔细阅读（第三套）：

卷三 仔细阅读

46-50:教材的命运

46：C)They can’t connect professors and students as textbooks do

47：D）Falling sales

48：A）Reform its structures

49：C）Answer questions using their personal experience

50：B)They can learn in an interactive way

51-55：新型物种

51：D)It gets energy from both food and sunlight

52：A)The genes it captures from the sea plant algae

53：D）They can produce chlorophyll on their own

54：C)They don’t usually function inside animal cells

55：B）They can survive for months without eating

翻译（三套）：