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【判断题】
在电池中负极板比正极极多一片。A.
正确
B.
错误
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举一反三
【单选题】Lily has always wanted ________ the top student in her class, so she never gives up ________ even if she fails the exam sometimes.
A.
to be; to study
B.
being; to study
C.
to be; studying
D.
being; studying
【简答题】Frances is the top student in our class, but her aim is to _______(achievement) even better exam results.
【单选题】It was____ a difficult question____ even the top student in the class could not work it work.
A.
such , that
B.
so, that
C.
such, as
D.
enough, as
【单选题】It was ___a difficult question___even the top student in the class could not work it out.
A.
such that
B.
so that
C.
such as
D.
enough as
【简答题】根据中文写出单词的适当形式。（5分） 小题1:Even though he is the top student in our class, he is very ________ (谦虚的). 小题2:He is very __________（心灵手巧的）, and he is good at cards. 小题3:Please give up ________ (争论) abo...
【多选题】在下列选项中,需要采用植物组织培养技术的是()。
A.
利用基因工程培育抗棉铃虫的棉花植株
B.
利用细胞工程技术培养“番茄一马铃薯”杂种植株
C.
利用花药离体培养得到单倍体植株
D.
利用秋水仙素处理萌发的种子或幼苗，得到染色体数目加倍的植株
E.
某珍贵物种的保存
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