Energy exists in different forms, such as light, heat, and chemical, mechanic, and electrical energy.




A.In
B.Forms
C.Mechanic
D.Electrical

- how often do you go swimming here? - ______.




A.I can’t swim very well.
B.It’s over there.
C.Not a lot.
D.Not really.

______ more than 2000 minerals are known, nearly all rocks are formed from seven mineral groups.




A.Although
B.However
C.Despite
D.Since

A.curriculum
B.congratulate
C.diplomatic
D.environment

Crows are probably the most frequently met and easily identifiable members of the native fauna of the United States. The great number of tales, legends, and myths about these bird indicates that people have been exceptionally interested in them for a long time(1). On the other hand, when it comes to substantive particularly behavioural-information, crows are less well known than many comparably common species and for that matter, not a few quite uncommon ones: The endangered California condor, to cite one obvious example. There are practical reasons for this.
In line 6, the author mentions the endangeredCaliforniacondor as an example of a species that is ……….





A.smaller than the crow
B.easily identifiable
C.featured in legends
D.very rare

___________(63)




A.maintain
B.stay
C.hold
D.keep

A.country
B.simplicity
C.discovery
D.commodity

___________(56)




A.continues
B.repeats
C.follows
D.carries

Adults laugh less than children, probably because they play less.





A.Unlike adults children laugh more while playing games.
B.Since adults have less time playing games; they don't laugh as much as children.
C.The reason why adults laugh less than children might be that they play less.
D.No matter how much adults play, they can't laugh more than children.

Due to the fact that the demand for tea was very high in the 19th century, its price was astronomical.




A.It was not until the 19th century that the demand for tea started to increase.
B.It was its astronomical price which decreased the demand for tea in the 19th century.
C.In the 19th century the price for tea didn't increase despite the demand.
D.The demand for tea was so high in the 19th century that its price was enormous.