【简答题】语法填空练习二 We often think of future. We often wonder 1.______ the world will be like in a hundred years’time. Think of space. Perhaps a permanent station on 2.________ moon will 3.________ (set) up. Perh...
【单选题】女性生殖管道的分化,正确的是
A.
当胚胎为女性,性腺分化为卵巢时,副中肾管退化消失,中肾管继续发育
B.
两侧副中肾管的中段和下段在中线会合形成子宫和阴道全部
C.
最初子宫内有中隔,至20周时,中隔吸收消失,形成单腔的子宫体及宫颈
D.
尿生殖窦的上部发育为输卵管,下部最后演变为子宫
E.
副中肾管尾端与尿生殖窦会合后继续增生为阴道板
【简答题】Choose the best phrase to complete the sentence. 1) die of die out die down A. Don't worry, the gossip will soon___________. B. Smallpox ( 天花 ) hascompletely _________ in th...
【单选题】原核生物mRNA在起始密码子AUG上游9-13个核苷酸处,有一段可与核糖体( )配对结合的SD序列。
【单选题】关于尿生殖窦演变的描述中,哪一项错误? ( )
【简答题】II. 选词填空 look forward to, in memory of, dress up, day and night, play a trick on, have fun with, as though, take place 1 . Her sister helped her to________for the party. 2. She set up an educationa...