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【单选题】
Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. 听力原文: What is the best way to learn a language? We should remember that we all learn our own language well when we were children. If we could learn a second language in the same way, it would not seem so difficult. Think of what a small child does. It listens to what people say and it tries to imitate what it hears. When it wants something, it has to ask for it. It is using the language, talking in it, and thinking it all the time. If people had to use a second language all the time, they would learn it quickly. We learn our own language by hearing people speak it, not by seeing what they write. We imitate what we hear. In school, though you learn to read and write as well as to hear and speak, it is best to learn all the new words through the ear. You can read them, spell them, and write them later. (27)
A.
It learns to say by imitating what people say.
B.
It learns to say by imitating what people hear.
C.
It learns to say by thinking.
D.
It learns to say by seeing.
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【单选题】牙齿18颗,会用汤勺吃饭,能说2~3字拼成的短句,会戴帽子,会踢球,该小儿最可能的年龄是
A.
l岁
B.
2岁
C.
3岁
D.
4岁
E.
5岁
【单选题】小迪,男。目前已有牙齿18颗,会用汤勺吃饭,能说2~3字拼成的短句,会戴帽子,会踢球,其最可能的年龄是
A.
1岁
B.
2岁
C.
3岁
D.
4岁
E.
5岁
【单选题】牙齿18颗,会用汤勺吃饭,能说2~3字拼成的短句,会戴帽子,会踢球,该小儿最可能的年龄是( )
A.
1岁
B.
2岁
C.
3岁
D.
4岁
E.
5岁
【简答题】列举常见的检验检疫证书。
【判断题】现场总线是安装在生产过程区域的现场设备(仪表)与控制室内的自动控制装置(系统)之间的一种串行、数字式、多点通信的数据总线。
A.
正确
B.
错误
【单选题】洋金花的主要化学成分是()
A.
圆锥形或羊角状,表面灰黄色或棕褐色
B.
不规则的团块或长圆形,表面灰黑或灰棕色
C.
圆柱形,略弯曲,表面灰棕色至暗棕色,有节、芽、叶柄基和根痕
D.
扁圆柱形,表面灰黄色,外皮横向断裂而露出木部,形似连珠
E.
根茎粗短,下生根数条,表面棕红或暗棕红色
【简答题】根据IEC对现场总线的定义,现场总线是一种应用于___,在___之间、___与___之间实行双向、串行、多节点数字通信的技术。
【简答题】____总线是开放式实时系统,一种串行数字通信链路,处于现场与自动控制装置之间数字式、串行、多点通信的数据总线
【多选题】红花的主要化学成分有( )。
A.
红花苷
B.
红花黄色素
C.
腺嘌呤
D.
芸香苷
【判断题】现场总线是用于现场仪表与控制系统和控制室之间的一种全分散、全模拟化、智能、双向、互联、多变量、多点、多站的通信网络。
A.
正确
B.
错误
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