【单选题】双子叶植物幼根表皮细胞的主要功能为() 。
【单选题】There are many ________ .
【判断题】We?need to?ensure?the?credibility?of the?market()
【多选题】Accordong to the teacher, what are the principles to ensure the effectiveness of your arguments?
D.
To ensure objectivity.
【单选题】How many English books are there on the table?there is only —English book on it.
【单选题】What does the reviewer believe is a great book?
A.
There should be many surprising ideas in a great book.
B.
A good book doesn't necessarily mean many new views.
C.
The author of a good book should have the same idea as the reader has.
【简答题】管状组织的表里纬的投纬比应为:(__________________ )。
【简答题】A.secure B.assure C.confirm D.ensure