_____(75)
A.on
B.for
C.by
D.in

_____(77)
A.quite
B.hardly
C.truly
D.really

_____(78)
A.lied
B.laid
C.lain
D.lay

_____(80)
A.during
B.of
C.for
D.when

_____(2)
A.stepping off
B.jumping off
C.keeping from
D.running from

_____(4)
A.loss
B.misfortune
C.difficulty
D.tragedy

Many of the current international problems we are now facing __________.
A.lack of the intelligent capabilities of understanding each other
B.linguistic in competencies
C.are because of not understanding themselves
D.are the result of misunderstandings

Having selected to represent the Association of American Engineers at the International Convention, __________.
A.the members applauded him
B.a speech had to be given by him
C.the members congratulated him
D.he gave a short acceptance speech

What does the passage mainly discuss?
A.How birds find and store food
B.How birds maintain body heat in the winter
C.Why birds need to establish territory
D.Why some species of birds nest together

Ptarmigan keep warm in the winter by _______ .
A.huddling together on the ground with other birds
B.building nests in trees
C.burrowing into dense patches of vegetation
D.digging tunnels into the snow