
【名词&注释】
基因型(genotype)、苔藓植物(bryophytes)、矿物质(mineral)、表现型(phenotype)、生物体(organism)、黄曲霉菌(aspergillus flavus)、原叶体(prothallus)
[单选题]东汉南阳太守杜诗“造作水排,铸为农器,用力少,见功多,百姓便之"。“水排"主要应用于
A. 灌溉
B. 制瓷
C. 耕种
D. 冶铁
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举一反三:
[单选题]苔藓植物的孢子萌发形成原叶体(prothallus)。( )
A. 正确
B. 错误
[单选题]--- Hi, Terry, can I use your computer for a while this afternoon?--- Sorry. __ .
A. It' s repaired
B. It has been repaired
C. It's being repaired
D. It had been repaired
[单选题]His efforts to raise money for his program were because no one showed any intention to take a cent out of their pockets.
A. in place
B. in sight
C. in effect
D. in vain
[单选题]The art show was _______ being a failure; it was a great success.
A. far from
B. along with
C. next to
D. regardless of
[单选题]People tend to make mistake when ____.
A. they perform. several challenging tasks at a time.
B. new messages are processed one after another
C. their relationships with others are affected
D. the tasks require little thought
[单选题]What effect does reading have on the author?
A. It helps him to realize his dream.
B. It opens up a wider world for him.
C. It makes his college life more interesting.
D. It increases his interest in worldwide travel.
[单选题]中国古代,朝廷有时将不在户口册内且因此不纳税的人称为“盗贼”。这反映当时朝廷
A. 要求民众纳税
只要求部分民众纳税我
不要求民众纳税
只要求部分“盗贼”纳税
[单选题]黄曲霉毒素是主要由黄曲霉菌(aspergillus flavus)产生的可致癌毒素,其生物合成受多个基因控制,也受温度、pH等因素影响。下列选项正确的是
A. 环境因子不影响生物体的表现型
B. 不产生黄曲霉毒素菌株的基因型都相同
C. 黄曲霉毒素致癌是表现型
D. 黄曲霉菌(aspergillus flavus)产生黄曲霉毒素是表现型
[单选题]人参为著名的补气强壮药,其最主要的药用成分是多种( )。
A. 维生素
B. 氨基酸
C. 人参皂苷
D. 矿物质
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