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【单选题】
Design and names by which merchants or manufacturers designate and differentiate their products are known as _____.A.
trademarks
B.
copyrights
C.
patents
D.
licenses
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举一反三
【单选题】They have developed techniques which are ______ to those used in most factories.
A.
more talented
B.
better
C.
greater
D.
superior
【单选题】听力原文： I would like to thank Professor Watkins for letting me have a few minutes to talk to you about the field trip we will be g6ing on tomorrow. This field trip is a required part of the class. You m...
A.
Professor Watkins.
B.
The field trip leader.
C.
The driver of the bus.
D.
Professor Watkins ' s brother.
【简答题】I’m not so sure I like my friends any more. I used to like them — to be honest. We’d have lunch, talk on the phone or exchange e-mails, and they all seemed normal enough. But then came Facebook and I ...
【单选题】Hey, boys and girls! Stop ____. I have something interesting to tell you.
A.
to talk
B.
to talking
C.
talks
D.
talking
【单选题】多糖、蛋白质、核酸等生物大分子都是由许多基本组成单位(单体)连接而成，因而被称为单体的多聚体，下列有关单体与多聚体的叙述中，错误的是 [ ]
A.
单体连接成多聚体都需要消耗ATP
B.
单体进入细胞的方式都是被动运输
C.
有的多聚体在细胞识别中起信息传递作用
D.
有的多聚体在细胞增殖时平均分配到两个子细胞
【单选题】听力原文： I would like to thank Professor Watkins for letting me have a few minutes to talk to you about the field trip we will be going on tomorrow. This field trip is a required part of the class. You m...
A.
In a theater.
B.
In a sitting-room.
C.
In a classroom.
D.
In a library.
【简答题】第二 类线性相位FIR滤波器不 可以 用来设计( )滤波器和( ) 滤波器。
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