问答题学生们每天问那位老师很多问题。
单项选择题What affects the amount of carbon-14 on earth
单项选择题According to this passage, the best way to build a good vocabulary is ______.
单项选择题The moment the author got down to the river bank he saw
单项选择题Which of the following is true
单项选择题From the text we can infer that () led to the sinking of the submarine Kursk.
A. a small fighting with another foreign submarine B. an explosion inside the submarine Kursk C. a great collision inside the submarine Kursk D. an attack from another foreign submarine
单项选择题The purpose of the scientists in studying tree ring is to______.
问答题教育目的
问答题简述交际法的概念和特点。
单项选择题1().
A. let out B. gave out C. came out D. set out