It can be inferred from the passage that the broad-tailed hummingbirds’ eggs and chicks are most vulnerable to attack by ___ .
A.insects
B.humans
C.birds
D.squirrels

According to the passage, how long does it take for broad-tailed hummingbird eggs to hatch?
A.Less than a week.
B.Two to three weeks.
C.One month.
D.More than six weeks.

According to the passaae, in what circumstances do hummingbirds build a second nest?


A.If the winter is unusually warm.
B.If the chicks in the first nest hatch early.
C.If there is an unusually large supply of food.
D.If the eggs are destroyed early in the season.

- Cindy: “Your hairstyle is terrific. Mary!7'

- Mary: “_____ "
A.Yes, all right.
B.Thanks, Cindy. I had it done yesterday.
C.Never mention it
D.Thanks, but I’m afraid.

The sports event was___________ and successfully organized.
A.good preparation
B.good job
C.well-done
D.well-prepared

The country won't be__________ for re-election as non-permanent member of the UN Security Council.


A.suitable
B.eligible
C.rightful
D.legal

The child who was caught___________ was made to stand in the corner of the classroom.


A.behaving
B.misbehave
C.misbehavior
D.misbehaving

_______________ the country joined the WTO, it has made big economic achievements.


A.After
B.Since
C.When
D.As soon as

A.discard
B.discard
C.swallow
D.suppose

A.eliminate
B.centenarian
C.accompany
D.electrify