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【单选题】
窃密和敌对势力攻击网络攻击的种类()A.
硬件攻击，软件攻击
B.
黑客攻击，病毒攻击
C.
物理攻击，黑客攻击，病毒攻击
D.
物理攻击，语法攻击，语义攻击
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反馈参考答案：
举一反三
【单选题】For a moment nothing happeneD． Then __ all shouting together.
A.
voices had come
B.
came voices
C.
voices would come
D.
did voices come
【单选题】For a moment nothing happened Then all shouting together. 21cnjy
A.
voices had come
B.
came voices
C.
voices would come
D.
did voices come
【单选题】For a moment nothing happened. Then all shouting together.A．voices had comeB．came voicesC．voice
A.
For a moment nothing happened. Then ____ all shouting together. A．voices had come
B.
came voices
C.
voices would come
D.
did voices come
【单选题】For a moment nothing happened .Then ____ of the falling stones and soils.
A.
noises had come
B.
came noises
C.
noises would come
D.
did noises come
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