采购订单和采购入库单是一对一的关系,是唯一对应的。
参考答案:错
用所给动词的适当形式完成句子。
小题1:The teacher told us that the earth (travel) around the sun.
小题2:Students in Yancheng didn’t go to school last Thursday because of the (pollute) air.
小题3:We are not sure if humans (move) to the Mars in the future.
小题4:By the time she left college, she_________(fall)in love with the young man.
小题5:More than one student_________(progress) a lot in English since they became Grade 9 students.
如图江边的山峰最高处距江面120m,江水深10m,映在平静江水中山峰的倒影是______像(选填“实”或“虚”),该山峰的最高处与倒影的最低处相距______m.