
【名词&注释】
水杨酸(salicylic acid)、细胞壁(cell wall)、盐酸美沙酮(methadone hydrochloride)、孢子囊(sporangium)、磷酸可待因(codeine phosphate)、胞间层(middle lamella)、初生壁(primary wall)
[单选题]可与FeCI3试液直接呈色的药物是( )。
A. 磷酸可待因
B. 盐酸哌替啶
C. 盐酸美沙酮
D. 盐酸吗啡
E. 基酯水杨酸
查看答案&解析
举一反三:
[单选题]稻谷壳内的部分是( ),习称“糙米”。
A. 颖果
B. 种子
C. 胚乳
D. 胚
[单选题]在真蕨植物叶的背面,肉眼能看到各种形状的孢子囊。( )
A. 正确
B. 错误
[单选题]This pastge is mainly about ______ .
A. the development of body language
B. the special role humans play in nature
C. the power to convey information to others
D. the difference between humans and animals in language use
[单选题]
A. success
B. study
C. time
D. attenmpt
[单选题]26 I have seldom seen my mother——pleased with my progress as she is now
A. so
B. very
C. rather
[单选题]
B. Therefore
C. Besides
D. Finally
A. HoweverB. Therefore
B. Besides
C. Finally
[单选题]离生雌蕊也属于单雌蕊。( )
A. 正确
B. 错误
[单选题]区别木材三切面的最好指标是( )。
A. 导管
B. 管胞
C. 射线
D. 木纤维
[单选题]植物生活细胞的细胞壁都具有胞间层(middle lamella)、初生壁(primary wall)和次生壁。( )
A. 正确
B. 错误
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