1.It is reported that before the earthquake,large()of fish would swim near the surface of the water and large()of ants would appear on the ground.
A.groups crowds
B.groups swarms
C.schools herds
D.schools armies
2.Human behavior is mostly a product of learning,whereas the behavior of an animal depends mainly on ().
A.consciousness
B.impulse
C.instinct
D.response
3.Such crimes may be so complex that months or years go by before anyone ()them.
A.discovered
B.will discover
C.would have discovered
D.discovers
4.Jim isn't ()but he did badly in the final exams last semester.
A.gloomy
B.dull
C.awkward
D.tedious
5.His intelligence and experience will enable him to ()the complicated situation.
A.cope with
B.settle down
C.intervene in
D.interfere with
6.In 1988,the foreign imported roses() for 34% of roses sold in U.S.A.
A.occupied
B.accounted
C.conquered
D.held
7.France's () of nuclear testing in the South Pacific last month triggered political debates and mass demonstrations.
A.assumption
B.consumption
C.)presumption
D.resumption
8.It seems oil ()from this pipe for some time.We'll have to take the machine apart to put it right.
A.had leaked
B.is leaking
C.leaked
D.has been leaking
9.Aside from his meager savings,he has no resources to （）(# fall back on #).
A.rely on
B.apply for
C.prepare for
D.return to
10.They spend the last five minutes in an exchange()their class performance for the day.
A.exaggerating
B.evolving
C.evaluating
D.extinguishing