A:﹣3
B:﹣7
C:﹣27
D:﹣17
该实验证明了茎的 ____ 功能,运输水分和无机盐的部位在茎的 ____
棉布开始成为主要衣料的朝代是( )
21÷8=____…… ____
14÷3=____ …… ____
22÷6=____ ……____
24÷7=____…… ____
如图所示:AB∥CD,MN交CD于点E,交AB于F,BE⊥MN于点E,若∠DEM=55°,则∠ABE=( )
— It's dangerous to swim in this river.
—Yes, you are right. The government has ______ people not to swim in it.