Peoplewhocan’t_______betweencolorsaresaidtobecolor-blind.
A、separate
B、divide
C、distinguish
D、appointed
WhichofthefollowingisNOToneofthemainsourcesofnewwordsinthepresent-dayEnglishvocabulary?
A、Therapiddevelopmentofmodernscienceandtechnology
B、Social,economicandpoliticalchanges
C、Theinvasionofforeigncountries
D、Theinfluenceofotherculturesandlanguages
Fromtheviewpointofwordformation,theword“smog”isa______.
A、compound
B、conversion
C、clipping
D、blending
Basically，theseattitudesamounttoabelief________leisurecanandshouldbeputtogooduse
A、which
B、that
C、what
D、how
Theprofessorworkedfor7hoursata________.
A、stretch
B、extend
C、expand
D、prolong