The word "microbes" in paragraph 3 could be best be replaced by which of the following?
A.Pieces of dust
B.Tiny organisms
C.Rays of light
D.Trapped bubbles

I have no idea who will come to the party.
A.It's not a good idea to say who will come to the party.
B.Who will come to the party is not a secret.
C.Who will come to the party is known.
D.I doir t know who is invited to the party.

The paragraph following the passage most probably discusses
A.Problems with satellite- borne radar equipment
B.the harsh climate of Antarctica.
C.further discoveries on the surface of Antarctica
D.ways to study Lake Vostok without contaminating it

Not until all their demands had been turned down did the workers decide to go on strike for more welfair.
A.rejected
B.sacked
C.reviewed
D.detected

The passage mentions which of the following as a reason for the importance of Lake Vostok?
A.It may contain uncontaminated microbes
B.It can be studied using radio waves
C.It has already been contaminated.
D.It may have elevated levels of ultraviolet light.

A.singer
B.future
C.reply
D.answer

A.interesting
B.photocopy
C.difficult
D.effective

She denied having stolen his mother's money.
A.refused
B.admitted
C.insisted on
D.reminded

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Not until a few years ago_______ playing football .
A.did he start
B.he has started
C.he started
D.had he started

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Who will _______ your baby when you are at work?
A.take after
B.take on
C.take over
D.take care of