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【单选题】
计算机系统包括硬件子系统和软件子系统。下面关于"系统"的说法正确的是（）。A.
只要有硬件子系统加上图形设备就构成一个计算机系统
B.
只要有硬件子系统加上音响设备就构成一个计算机系统
C.
只要有软件子系统加上互联网就构成一个计算机系统
D.
两个子系统必须互相适合、配套才构成一个计算机系统
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皮皮学刷刷变学霸
举一反三
【单选题】顶棚的作用有( )。 1用来遮挡屋顶结构,美化室内环境 2提高屋顶的保温隔热能力 3增进室内音质效果 4保护顶棚内的各种管道
A.
②③④
B.
①②③
C.
①③④
D.
①②④
【单选题】Why does Mrs. Harris want her son William to be a science degree holder?
A.
Because William is interested in it.
B.
Because William is good at this field.
C.
Because it promises a well-paid job.
D.
Because her firm is in want of scientists.
【单选题】Listen again to part of the talk. Then answer the question. Why does the professor say this:
A.
To point out the diversity of plant life
B.
To give an example of an environmental cue
C.
To compare different ecosystems where plants live
D.
To explain why few plants survive in the desert
【单选题】Why does the author mention 'Deep Blue'?
A.
To counter the argument that computers can't think.
B.
To entertain the reader with a humorous anecdote.
C.
To provide an example of a weak A.I. program.
D.
To supply a transition between two unrelated arguments.
【简答题】妊娠晚期，孕妇每周体重增加不应超过 （ ）。
【单选题】Why does Phil build the tree house alone but not with his son ?
A.
His son is not at home.
B.
His son is not interested in building the tree house anymore.
C.
He doesn't have a son.
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