He was _________ to explain why he hadn't finished the work.
A.at random
B.at a loss
C.at least
D.at first

____________ to the national park before, Sue was amazed to see the geyser.
A.Being not
B.Not having been
C.Not being
D.Having not been

Names of people in the book were changed to preserve anonymity.
A.cover
B.presume
C.conserve
D.reveal

It takes me 15 minutes to get ready.
A.to go
B.to prepare
C.to get up
D.to wake up

Kate was overwhelmed with tension before she entered the final contest.
A.nervousness
B.high degree
C.strength
D.eagerness

Why does the author refer to Gilbert White's book in line 2?
A.To indicate that more research is needed in this field.
B.To contradict the idea that animals can count.
C.To show how attitudes have changed since 1786.
D.To provide evidence that some birds are aware of quantities.

According to information in the passage, which of the following is LEAST likely to occur as a result of animals' intuitive awareness of quantities?
A.When asked by its trainer how old it is, a monkey holds up five fingers.
B.A lion follows one antelope instead of the herd of antelopes because it is easier to hunt a single prey.
C.A pigeon is more attracted by a box containing two pieces of food than by a box containing one piece.
D.When one of its four kittens crawls away, a mother cat misses it and searches for the kitten.

How would the author probably characterize the people who are mentioned in the first line of the second paragraph?
A.As foolish
B.As clever
C.As demanding
D.As mistaken

The author mentions that all of the following are aware of quantities in some ways EXCEPT
A.caterpillars
B.mice
C.plovers
D.wasps

The word "odd" refers to which of the following?
A.numbers such as 2, 4, 6 and so on
B.unusual numbers
C.lucky numbers
D.numbers such as 1, 3, 5 and so on