The passage is written to ______.
A. point out the worries caused by OnStar
B. promote the brand and sale of OnStar
C. introduce the new features of OnStar
D. show the future trend represented by OnStar
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As mentioned in the passage, only one study found that roommates have an impact on the ______ of the other roommates.
A. academic grades
B. social behavior
C. sleeping patterns
D. personal attitudes
In computer matchmaking, initially students do not reveal their ______.
A. personalities
B. identities
C. habits
D. hobbies
The author's attitude towards spinal fusion is probably ______.
A. supportive
B. undecided
C. critical
D. mixed
We can conclude from the passage that OnStar is ______.
A. too complicated to use especially for new drivers
B. not as useful and effective as the company claims
C. popularly used among more expensive ears
D. not widely used in the country except in a few states
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