一条直线长3米，两条直线长6米．______．
因为直线无端点，无限长，
所以一条直线长3米，两条直线长6米，说法错误；
故答案为：错误．
―Do you have anything to do this afternoon?
―What’s up?
―Let’s go shopping. It’s said that Jinying Shop ______, and all the sweaters are sold at half price.
―Why not?
A．has closed down
B．was closing down
C．closes down
D．is closing down
小麦最易感染赤霉病的时期是在齐穗后的（）。
A.10天
B.15天
C.20天
D.30天
