Often a headache is caused by the contraction of one of the muscle group that cover the skull, thus causing spasm and pain.




A.Often
B.is caused
C.group
D.spasm

According to the passage, how do the fiberscopes used today differ from those used in five years ago?




A.They use brighter light
B.They are longer
C.They contain more fibers
D.They are larger in diameter

A.independent
B.horizontal
C.amazingly
D.referendum

Beaches were __________ as police searched for canisters of toxic waste from the damaged ship




A.sealed off
B.cut off
C.washed up
D.kept out

No one died in the accident, __________?




A.did he
B.did they
C.didn’t he
D.didn’t they

You’d make friends if you __________ a little more sociable.




A.are
B.were
C.had been
D.would be

Choose the best option
______ with her boyfriend yesterday, she doesn't want to answer his phone call.




A.Having quarreled
B.Because having quarreled
C.Because of she quarreled
D.Had quarreled

Choose the best option
Not only _____ us light, but it also gives us heat.




A.the sun gives
B.the sun has given
C.has the sun given
D.does the sun give

The word “ forces” in paragraph 2 could best be replaced by:




A.military
B.effort
C.power
D.energy

No one died in the accident,________?




A.didn’t they
B.did he
C.didn’t he
D.did they