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pertinent; related; connected to the current subject
prosaic
unconventional
back
relevant
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TOEFL listening: How would you describe the results of the Viking biological experiments?

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50 TOEFL lectures   50 TOEFL conversations

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Narrator:
Now answer the following questions. You may use your notes to help you.

1). What are "canali"?
(A) canyons
(B) canals
(C) carbonates
(D) channels

2). What is this lecture mainly about?
(A) Exploring life on Mars
(B) Proving there's life on Mars
(C) Testing for life on Mars
(D) Disproving there's any life on Mars

3). Judging from the lecture, how would you describe the results of the Viking biological experiments?
(A) Inconclusive
(B) Exciting
(C) Inaccurate
(D) Too complex

4). Which is NOT true of meteorite ALH84001?
(A) It was discovered by Schiaperelli.
(B) It fell in Antarctica.
(C) It has the composition of Mars.
(D) It contains evidence for micro-organisms.

5). What are scientists now focussing their research on?
(A) Meteorites
(B) Better experiments
(C) Extinct life
(D) Polycyclic aromatic hydrocarbons

6). According to the lecture, why is it difficult to disprove the existence of life on Mars?
(A) Test results are always ambiguous.
(B) Scientists can never completely agree.
(C) The climate of Mars is always changing.
(D) Definitive research is always incomplete.

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50 TOEFL lectures
50 TOEFL lectures
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