What does the passage mainly discuss?
A.Communication styles
B.The connection between voice and personality
C.The production of speech
D.The function of the voice in performance

The word "evidenced" in line 17 is closest in meaning to _________ .
A.questioned
B.exaggerated
C.indicated
D.repeated

The word "derived" in line 10 is closest in meaning to _________ .
A.registered
B.obtained
C.prepared
D.discussed

All of the mammals, dolphins are undoubtedly among the friendly to human .
A.All of
B.undoubtedly
C.among
D.friendly

Bells told people of happy events, such as weddings and born or, sometimes had to announce unpleasant events such as a death.
A.of
B.weddings
C.born
D.unpleasant

All nations may have to make fundamental changes in their economic, political, and the technological institutions if they are to preserve environment
A.have to make
B.changes in
C.the technological institutions
D.to preserve

Grand Banks of Newfoundland, Canada, is mainly affected by______.
A.steam fog
B.frontal fog
C.advection fog
D.radiation fog

The first paragraph focuses on which aspect of fog?
A.its beauty
B.its dangers
C.its composition
D.its causes

Please _______your cigarette. I am going to get choked.
A.blow out
B.put aside
C.put out
D.cut down

Slang can be defined as a set of codes used in ______ language.
A.uneducated
B.unfamiliar
C.informative
D.informal