【单选题】【消耗次数：1】
科研题最基本的来源是：（)
①
实践问题
②
基础理论
③
学科边缘
④
逻辑思辨
参考答案：
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相关题目
【多选题】
众智科学基础理论包括（）。
①
A.智能的定义及度量
②
B.智能之间的运算
③
C.个体及系统智能水平的计算方法
④
D.众智网络系统设计、分析、诊断、优化方法
⑤
E.以上都是
随机题目
【单选题】
12.You can’t imagine what great trouble they have ____the problem____.
①
to solve; being talked about
②
solving; discussing
③
to solve; to talk about
④
solving; being discussed
【单选题】
6.And there, almost____in the big chair, sat her little brother, who never had to be told to keep quiet.
①
having lost
②
losing
③
to be lost
④
lost
【单选题】
17.____, the subject was always in my mind.
①
Walking or sleeping
②
Walking or slept
③
Having walked or slept
④
To walk and sleep
【单选题】
20. The joke told by Tom made us_____, so our maths teacher couldn’t make himself _____.
①
to laugh; hearing
②
laughing, heard
③
laughing; hear
④
laughed; heard
【单选题】
15.The program was so exciting that the children kept their eyes ____on the screen.
①
to fix
②
to be fixed
③
fixed
④
fixing
【单选题】
10.In January, 2004, the United States successfully launched “spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind.
①
it marked
②
marking
③
marked
④
to mark
【单选题】
19. When he came to, he found himself _____ on a chair, with his hands _____ back.
①
to sit; tying
②
sitting; tying
③
seating; tied
④
seated; tied
【单选题】
13.The monument(里程碑) was built in honor of the explorer who was believed ____the river.
①
to have discovered
②
to have been discovered
③
to discover
④
having been discovered
【单选题】
2. — Have you considered _____ your job as a teacher? —Yes. I like the job because a teacher is often considered _____ a gardener.
①
to change; to be
②
to change; being
③
changing; being
④
changing; to be
【单选题】
8.To answer correctly is more important than____.
①
that you finish quickly
②
finishing quickly
③
to finish quickly
④
finish quickly