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【单选题】
计算机所采用的主要电子器件的发展顺序是( )
A.
.晶体管、电子管、中小规模集成电路、大规模和超大规模集成电路
B.
电子管、晶体管、中小规模集成电路、大规模和超大规模集成电路
C.
晶体管、电子管、集成电路、芯片
D.
.电子管、晶体管、集成电路、芯片
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【单选题】生态系统的基本组成部分是( )。
A.
植物、动物、微生物及其生存环境要素
B.
生物环境要素和非生物环境要素
C.
植物、动物、微生物
D.
生存环境要素、生物环境要素、生活环境要素
【单选题】生态系统的基本组成部分是( )。
A.
生态环境要素
B.
植物、动物、微生物及其生存环境要素
C.
植物、动物、微生物
D.
非生物环境要素、植物、动物
【单选题】生态系统的基本组成部分是______。
A.
非生物环境要素、生物环境要素
B.
植物、动物及生存环境要素
C.
非生物环境要素、植物——生产者有机体、动物——消费者有机体、微生物——分解者有机体
D.
非生物环境要素、植物、动物
【单选题】When the sentence "The had made a mess of the house" is turned into passive voice, which of the following is CORRECT?
A.
A mess had been made in the house.
B.
A mess had been made by them.
C.
The house had been made a mess of.
D.
The house had been made a mess.
【单选题】It started raining,so she__________ the nearest house.A.made forB.made off
A.
It started raining,so she__________ the nearest house. A.made for
B.
made off
C.
made up
D.
made out
【单选题】生态系统的基本组成部分是( )。
A.
非生物环境要素、生物环境要素
B.
植物、动物、微生物及其生存环境要素
C.
植物、动物、微生物
D.
非生物环境要素、植物、动物
【单选题】生态系统的基本组成部分是( )。
A.
生物环境要素
B.
植物、动物、微生物及其生存环境要素
C.
植物、动物、微生物
D.
非生物环境要素、植物、动物
【单选题】When the sentence "They had made a mess of the house" is turned into passive voice, which of the following is CORRECT?
A.
A mess had been made in the house.
B.
A mess had been made by them.
C.
The house had been made a mess of.
D.
The house had been made a mess.
【单选题】The burglars broke into his house and______before the police arrived.
A.
made for
B.
made off
C.
made out
D.
made up
【单选题】猪丹毒时,猪皮肤上出现红色火烙印样疹块,按压褪色,该病变属于
A.
出血
B.
淤血
C.
充血
D.
局部缺血
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