His feelings to this failure have（）from bitterness to hope.

单项选择题It was difficult to（）how many trees had been destroyed.

A.occupy
B.test
C.estimate
D.evaluate

单项选择题Peter was（）the lawn around the roses.

A.trimming
B.tripping up
C.ripping off
D.dripping

单项选择题The children are quite unlikely to be（）to the new teacher.

A.striking
B.dominant
C.senior
D.obedient

单项选择题Her father gave her the（）of going on to college or starting to work.

A.coordination
B.insight
C.phase
D.alternative

单项选择题Economic benefits must be weighed（）the possible dangers of handling radioactive waste.

A.by
B.with
C.against
D.out