Which word in the first paragraph describes the ideal home for most Americans？

A.Radiation

B.Concatenation

C.Elevation

D.Connotation

A.Esc

B.Alt

C.FI

D.Shift+Fl

A.FI

B.FOB

C.FCA

D.EXW

A./li: f/ /fi: l/

B./sip/ / zip/

C./sai/ /sei/

D./keit/ /feit/

A./sip//zip/

B./fi：l//li：f/

C./keit//feit/

D./sai//sei/

A.FI

B.F2

C.F3

D.F4

Which of the following is not a minimal pair？

A．/li: f//fi: l/

B．/sip//zip/

C．/sai//sei/

D．/keit//feit/

Which of the following is not a minimal pair？(对外经贸2006研)

A．(li:f)(fi:l)

B．(sip)(zip)

C．(sai)(sei)

D．(keit)(feit)

A.A. what they grow

B.B. that they grow

C.C. how they grow

D.D. which they grow

Which of the following desdription is WRONG .about Wi-Fi？ ().

A.Any standard Wi~Fi device. will work anywhere in the world with global operative set of standaeds

B.Now most laptops are built with wireless network adapters inside

C.One can connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a router

D.Communications between two devices need the involvement of an access point with Wi-Fi