读一读,判断正误。
Look at this desk. It's Jim's desk. It's brown. Jim's book is on it. It's an English book. His pencil-box is in the desk. His pencil is in his pencil-box. But where's his pen? He can't find it.
保护矿产资源是国家的事,与小学生无关。( )
The twins look so ______ that I can’t tell one from the other.
出气体的体积和时间的关系如图所示.请依图回答下列问题: