单项选择题管理和控制计算机系统软硬件资源的软件是_______
单项选择题Microsoft的IE是一种_______
单项选择题计算机能直接执行的程序是_______
单项选择题在表示存储器的容量时,1M的准确含义是_______
单项选择题The vision of that big black car hitting the sidewalk a feW feet from us will never be_______from my memory.
单项选择题The author was required to submit an_______of about 200 words together with his research paper.
单项选择题Everybody was touched_______words after they heard her moving story.
单项选择题Some plants are very_______to light;they perfer the shade.
单项选择题The children all turned_______the famous actress as she entered the classroom.
单项选择题His sister left home in 1998,and_______since.