__________(28)




A.produce
B.product
C.production
D.productive

I/ keen/ study/ English.




A.
B.
C.
D.

“MD” is the abbreviation of _______.




A.Medical Development
B.Doctor of Medicine
C.Medium Density
D.Management Director

Why are otters and mussel shells included in the discussion in paragraph 3?




A.To provide an example of tool use among animals.
B.To show that animals are very good at using objects in their habitat.
C.To provide that certain species demonstrate greater ability in tool use than other species.
D.To provide an example of the use of weapons among animals.

What did researchers discover in the study of honeybees discussed in paragraph 2?




A.Changing the location of food caused bees to decrease their dance activity.
B.The bees were able to determine in advance where scientists would place their food.
C.Bees are able to travel at greater speeds than scientists thought.
D.The bees could travel 25% farther than scientists expected.

John , along with his mother and some friends, __________ to a party tonight.




A.is going
B.was going
C.goes
D.are going

We saw Peter in Scotland , although we __________ .




A.hadn’t expected
B.didn’t expect to
C.didn’t expect
D.weren’t expecting

The word “refreshing” in the last paragraph is closest in meaning to__________.




A.popular
B.revitalizing
C.common
D.awakening

It can be inferred from the passage that the ice would not be flat if _______.




A.there were no lake underneath
B.the lake were not so big
C.Antarcticawere not so cold
D.radio waves were not used

________(44)




A.taking
B.carrying
C.delivering
D.bearing