The children had been_______ of the danger, but had taken no notice.
A.shown
B.notice
C.prevented
D.warned

She was busy______________________ a variety of articles to the customers.
A.with introducing
B.introducing
C.for introducing
D.in introducing

Can you deliver this letter _____ hand?
A.by
B.with
C.in
D.to

He felt very tired. However, he was determined to continue to climb up the mountain.


A.He felt so tired that he was determined to continue to climb up the mountain.
B.Feeling very tired, he was determined to continue to climb up the mountain.
C.As a result of his tiredness, he was determined to continue to climb up the mountain.
D.Tired as he might feel, he was determined to continue to climb up the mountain.

_____ (45)
A.taken
B.kept
C.given
D.stood

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