茎的维管射线的数目是固定的,而髓射线的数目是不固定的。( )BWhen Mary Moore began her high school in 1951, her mother told her, "Be sure and take a typing course so when this show business thing doesn't
具( )的作用。Excuse me, Marcia, a reporter from Vanity Fair ________ all day. Could you speak to her now?56_______Edward, you play so well. But I _________ you played the piano.BWhen people hear a pre
叶片的形状是根据( )决定的。What did duret do shortly after the ambulance came?Some of you may have finished unit one. _____ , you can go on to unit two.We know from the text that Ginger Gray ．What di
听力部分结束前,配制成一定物质的量浓度的溶液
用玻璃棒蘸取溶液,“These aren’t my boots．you know．”As she pulled the offending boots from my feet,she still managed to look both helpful and interested．On
关于甲地的叙述,正确的是Last year the number of studects who graduated with a driving licence reached 200,000, a(n)__ of 40,000 per year.Which of the following found a new way for its development?是葡
下列关于变异的说法正确的是：As a new diplomat, he often thinks of ______ he can react more appropriately on such occasions.洋葱属于单子叶植物。( )Many buildings in the city need repairing, but the one
