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名词解释：表面层冷作硬化。

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The event will be telecast _____________ to nearly 150 cities.

A. simultaneous
B. simultaneously
C. unsimultaneously
D. insimultaneously

Teething can be painful and make your baby __________ .

A. irritable
B. irritably
C. inimitable
D. inimitably

They told me about __________ and public apathy.

A. isolate
B. isolated
C. isolation
D. isolating

既能透过滤纸又能透过半透膜的是

A. 三氯化铁溶液
B. 淀粉溶液
C. 氢氧化铁溶胶
D. 泥浆
E. 缔合胶体