Narcissus bulbs ------------- at least three inches apart and covered with about four inches of well-drained soil.
A.must plant
B.should be planted
C.should have been planted
D.should be planting

He was advised to ------------- from excessive smoking and consumption of alcohol.
A.recoil
B.abstain
C.renounce
D.reject

The steep ------------- of the land makes cultivation difficult.
A.ascent
B.elevation
C.rise
D.slope

___________(29)
A.example
B.robbing
C.theft
D.carrying

___________(31)
A.many
B.that
C.rarely
D.much

___________(33)
A.taking
B.about
C.recovering
D.tracking

___________(34)
A.come up with
B.bring up with
C.put in with
D.get by with

The word “ conceal” is closest in meaning to which of the following?
A.Hide
B.Create
C.Erode
D.Contain

The passage implies that guyots were first detected by means of
A.a deep-sea diving expedition
B.computer analysis
C.research submarines
D.a fathometer

What does the passage say about the Arctic Ocean?
A.The first guyot was discovered there.
B.It is impossible that guyots were ever formed there.
C.There are more guyots there than any other ocean.
D.No guyots have ever been found there.