A. turn
B. turned
C. turning
D. had turned
A. has never studied
B. had never studied
C. never studied
D. will never study
A. to ask
B. you ask
C. being asked
D. asking
A. were – could look
B. was – can look
C. had been – would look
D. is – would look
A. who
B. that
C. he
D. which
A. such funny
B. too funny
C. a little funny
D. such
A. therefore
B. hence
C. so
D. consequently
A. head
B. would head
C. headed
D. might head
A. were handed
B. handing
C. handed
D. had been handed
A. did I meet – that I realized
B. I met – that I could realize
C. had I met – could I realize
D. I had met – did I realize
A. drank
B. was drinking
C. had drunk
D. would drink
A. sentimental
B. feeling
C. affection
D. emotional
A. effective
B. eminent
C. erratic
D. erroneous
A. reference
B. preference
C. deference
D. interference
A. pattering
B. rustling
C. rattling
D. clattering
A. pass
B. start
C. break
D. burst
A. tension
B. intensity
C. extension
D. strain
A. lauch
B. catch
C. cast
D. send
A. away with
B. out of
C. off with
D. up on
A. firm
B. close
C. steady
D. big
A. human nature
B. without saying
C. common knowledge
D. saying
A. turn up for
B. come off with
C. common knowleadge
D. no wondering
A. meet
B. suit
C. convenience
D. cater
A. In a nutshell
B. All of a sudden
C. At no time
D. Without caution
A. disagreed
B. ridded
C. deprived
D. disapproved
A. title
B. brand
C. label
D. tag
A. Thank you!
B. I do
C. Yes, please
D. That’s alright
A. if I had tapped
B. whether I have tapped
C. did I tap
D. had I tapped
A. turns
B. time
C. risk
D. interest
A. would not have enrolled
B. mustn’t have enrolled
C. ought not have enrolled
D. couldn’t have enrolled
A. Jules Verne’s supposition of the Earth’s center.
B. The Earth’s interior through the study of seismic waves.
C. The comparison between the Earth’s core and the outer space.
D. The depth and the temperatures at the Earth’s interior
A. Boreholes
B. Shells
C. Seismic waves
D. Mines
A. controlling
B. important
C. outdated
D. opposing
A. mantle
B. crust
C. seabed
D. Earth’s center
A. Light, solid rock
B. Uniformity of composition
C. Dramatically increasing pressure
D. Compressed, incandescent gas
A. mantle
B. crust
C. seismic waves
D. outer core
A. At relatively great depths, the rock behaves more like a liquid than a solid
B. Some seismic waves cannot pass through the core
C. Deeper down the Earth, the rock is melted due to high temperature
D. The outer core is liquid and the center is solid
A. runs along
B. rubs against
C. turns into
D. floats on
A. Government funds are not available to study the Earth’s core.
B. Scientists aren’t interested in the characteristics of the Earth’s core.
C. It is impossible to go to the Earth’s core to do research.
D. The Earth’s core is made of elements that are dangerous to humans.
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