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【判断题】
树木主要由树皮、髓心和木质部组成,建筑用木材主要是使用木质部。( )
【单选题】
根初生维管组织木质部和韧皮部的排列是( )。
【单选题】
根初生维管组织木质部和韧皮部的排列是( )。
【判断题】
真菌病害多不会产生病征,可以很容易地诱导出子实体().
【单选题】
()是介于木质部和韧皮部之间的薄壁细胞,生理活性最旺盛。
【单选题】
双子叶植物茎的初生木质部的发育方式为( )。
【单选题】
双子叶植物根的初生木质部的维管柱类型为( )。
【单选题】
3. She was so pleased that she felt like _______.
①
to find someone to talk
②
to find some to talk to
③
finding someone to talk
④
finding someone to talk to
【单选题】
1.The authors purpose of writing
①
To predict how children under the future educational system would feel
②
to tell us a story about Tommy and Maggie
③
to display the availability of the net courses
【单选题】
23. English has become _____ international language of business.
【单选题】
8.The girl was dancing about excitedly when suddenly she stood_______ and put on a horrified look.
【单选题】
4.He was working on a children’s book______ Limericks.
【单选题】
20.When he was in_____ hospital, we all went to _____ hospital to visit him .
【单选题】
17._____ breakfast I ordered still hasn’t arrived. .
【单选题】
19.We know _____ children learn from playing.
【单选题】
12. When you are _____ with the book, please don’t throw it away.
【单选题】
26. I couldn’t go to Jane’s party. It was ______ day I was babysitting for Derek and Linda.