国开题库
-
She __________ ill for three days.
#A.is#B.was#C.has been
查看详情 + -
She _________ the children not to make any noise.
#A.tell#B.told#C.said
查看详情 + -
She ________ work next Monday. (*)
#A.is starting#B.starts#C.started
查看详情 + -
She ________ close contacts with the scientist for many years.
#A.maintained#B.stayed#C.claimed
查看详情 + -
Python中的for循环:for var in __: print(var)哪个选项不符合 上述程序空白处的语法要求？
#A.range(0,10)#B.{1;2;3;4;5}#C.\"Hello\""#D.(1,2,3)
查看详情 + -
Putting ________ ice in your mouth is inappropriate for elderly or sick people.
#A.splashed#B.crashed#C.clashed#D.collapsed
查看详情 + -
Purchasing the new production line will be a __________ deal for the company.
#A.profitable#B.forceful#C.tremendous
查看详情 + -
PubMed中替代任意个字符的截词符是
#A.?#B.*#C.$#D.%
查看详情 + -
Primary school students will ______.
#A.have to study much harder than they do now#B..have to take examinations on a relatively selective basis#C..enter a junior middle school near their homes without taking an exam#D.have no examinations during their nine-year compulsory education
查看详情 + -
PN结加正向偏置是指（ ）。
#A.P区接电源负极，N区接电源正极#B.P区接电源正极，N区接电源负极#C.P区和N区都接电源负极#D.P区和N区都接电源正极
查看详情 +