Why are otters and mussel shells included in the discussion in paragraph 3?
A.To provide that certain species demonstrate greater ability in tool use than other species.
B.To provide an example of tool use among animals.
C.To show that animals are very good at using objects in their habitat.
D.To provide an example of the use of weapons among animals.

The word “rudimentary” in meaning to ___________.
A.technical
B.basic
C.superior
D.original

Scientists concluded from the experiment with chimpanzees and chocolate chips that chimpanzees __________.
A.prefer to work in pairs or group
B.have difficulty selecting when given choices
C.lack abilities that other primates have
D.exhibit behavior that indicates certain mathematical abilities

A.endangered
B.humidity
C.necessary
D.incredible

A.biology
B.accordance
C.incomplete
D.pudicity

Would you like to have a drink with me tonight, John?
A.Would
B.a
C.tonight
D.John

A.question
B.presentation
C.industrialization
D.modernization

I'm sure that you can recognize her at the station; she________a red raincoat.
A.will be wearing
B.will have been wearing
C.is going to wear
D.will have worn

This________dictionary includes a few animations.
A.electrifying
B.electronic
C.electric
D.electrical

Jane: "Do you know that this house is haunted?"
Steve: "________."
A.Where on earth have you been?
B.Haunted? You're pulling my leg!
C.Who was haunted?
D.Yes, I would. Go ahead.