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APT自动编程语言的系统程序主要组成由
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【单选题】America's Brain Drain Crisis Losing the Global Edge William Kunz is a self-described computer geek. A more apt description might be computer genius. When he was just 11, Kurtz started writing software...
A.
Y
B.
N
C.
NG
【简答题】被子植物叶片形态具有极大的多样性,植物学上一般从叶片的()()()和()等几个方面对叶片加以描述,以此作为植物分类鉴定的依据之一。
【单选题】—Could you tell me _______ to go to Hainan by air? —Just a minute, please. I have to check my computer. [     ]
A.
how much does it cost
B.
how much did it cost
C.
how much it cost
D.
how much it costs
【单选题】Viruses are human-made software programs【B1】specifically to wreak havoc on personal computers and networks. The【B2】of contracting one of these computer viruses over the Internet has increased dramatic...
A.
existed
B.
discovered
C.
created
D.
manufactured
【简答题】.被子植物叶片形态具有极大的多样性,植物学上一般从叶片的( ),( ),( )和( )等几个方面对叶片加以描述,并作为植物分类鉴定的依据之一。
【简答题】类矿物在自然界中分布十分广泛,占矿物总数的约1/4,占地壳总重量的75%,是最主要的造岩矿物(三大类岩石)。
【单选题】在自然界中分布十分广泛,占矿物总数的约1/4,占地壳总重量的75%,是最主要的造岩矿物(三大类岩石)的是:
A.
硅酸盐矿物
B.
碳酸盐矿物
C.
硫化物
D.
粘土矿物
【单选题】An internet is a combination of networks connected by()
A.
modems
B.
routers
C.
switches
D.
computers
【简答题】As computers become all the more popular in China, Chinese people are increasingly relying on computer keyboards to input Chinese characters. But if they use the computer too much, they may end up for...
【单选题】The result must be accurate, because all the calculations have been done by an______computer.
A.
electric
B.
electrical
C.
electron
D.
electronic
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