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【简答题】
完形填空。 Thomas Edison was a famous American scientist. He was ____1____ in 1847. When he was a child, he liked to ____2____ out how things worked. He was in school ____3____ only three months. He asked his teacher a lot of strange questions. Most of them had nothing ____4____ his lessons. The teacher thought the boy was not bright. So Edison’s mothertook her son ____5____ of school. As she had been a teacher, she taught his ____6____. The boy read a ____7____. Soon he became very____8____ in science. At the age of ten, Edison had already ____9____ a chemistry lab for himself. When he grew into a young man, he __ 10 many important things for man. All these things have changed the whole world. Can you name some of his inventions? (     )1.  A. taken (     )2.  A. look (     )3.  A. for (     )4.  A. about (     )5.  A. into (     )6.  A. myself (     )7.  A. lot (     )8.  A. glad (     )9.  A. built (     )10.A. taken B. born B. speak B. in B. on B. at B. yourself B. little B. angry B. made B. invented C. killed C. find C. at C. with C. front C. herself C. few C. excited C. produced C. made D. caught D. watch D. on D. in D. out D. himself D. many D. interested D. grown D. planted
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举一反三
【单选题】设逻辑变量X为True,Y、Z均为False,以下逻辑表达式值为True的是()。
A.
XOR(YANDZ)
B.
(XANDY)ORZ
C.
(NOTX)ORYORZ
D.
XAND(YORZ)
【简答题】阅读理解 As they migrate (迁徙), butterflies and moths choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests t...
【单选题】当毛坯出现形状歪斜,偏心、各部分壁厚不均匀等缺陷时,可以通过划线借料的方法,使各加工面的()合理分配,互相借用,从而保证零件加工。
A.
加工用量
B.
加工余量
C.
切削用量
D.
切削力
【单选题】在B2C电子商务模式中,参与主体不包含( )
A.
监管局 网上商家消费者 CA认证机构
B.
网上商家
C.
消费者
D.
CA中心
【简答题】Butterflies are some of the most fascinating and beautiful insects in the world. butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to sur...
【简答题】设逻辑变量A、B均为True,C、D均为False,以下逻辑运算表达式值为假的有()。 A)(AANDB)OR(CANDD) B)NOT(AANDB)OR(CANDD) C)(AORB)AND(CORA) D)(AORB)OR(NOT())
【单选题】设逻辑变量X为True,Y、Z均为False,以下逻辑表达式值为True的是______
A.
X  or  (Y and Z)
B.
(X and Y) or Z
C.
(not X) or Y or Z
D.
X and (Y or Z)
【判断题】假设A、B、C均为逻辑变量,则: 【sxj2020020902-0002】
A.
正确
B.
错误
【单选题】在B2C电子商务模式中,参与主体不包含( )
A.
监管局
B.
网上商家
C.
消费者
D.
CA认证机构
【单选题】设逻辑变量X为False,Y、Z均为True,以下逻辑表达式值为False的是______。
A.
X or (Y and Z)
B.
(X and Y) or Z
C.
(not X) or Y or Z
D.
X and (Y or Z)
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