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Practice Listening: Fill in the Blanks (Type In) ID: #36776 Short Life on Mars
Instructions ›
You will hear a recording. Type the missing words in each blank.
* Fill in the missing words into the blank fields
The  thing  that  makes  it  difficult  is  because  even  if  life  had  evolved  on  Mars,  the  chances  of  being  preserved  are  very  small.  If  we  use  Earth  as  a    and  our  planet  is  teeming  with  life,  yet  it  rarely  preserves  evidence  of  life  of  the  fossil  record.  And  the  focus  now  is  on  exploring  for    environments.  If  you're  looking  for  water,  a    of  energy,  either  solar  energy  or  thermal  energy  or  chemical  energy,  and  then    carbon,  assuming  life  as  we  know  it  on  Earth  based  on  carbon.  So  those  are  sort  of  the  three  things  that  we're  looking  for  in  the  course  of  our  mission.

Result:

AI explanationShows the answer. Tap to open.
Correct answer: reference

Explanation: On the recording you hear "use Earth as a reference and". After "use Earth as" you need a word for a thing to compare with.

Meaning: "reference" means a thing you use to compare with.

Wrong options:

  • referance: It has "a" where the word has "e". Write "reference". Only the exact spelling gets the mark.
Correct answer: habitable

Explanation: Listen again to "for habitable environments". The word follows "for", and it ends in able.

Meaning: "habitable" means able to support life.

Wrong options:

  • habitible: It has "i" where the word has "a". Check the letters: "habitable". A small spelling mistake loses the mark.
  • inhabitable: Inhabitable is different. It does not mean the same here.
Correct answer: source

Explanation: Here you hear "a source of energy, either". The speaker uses "a" before it, so you need a thing that gives energy.

Meaning: "source" means the place or thing energy comes from.

Wrong options:

  • sorce: It leaves out the "u". Write "source". Only the exact spelling gets the mark.
  • course: Course is a different word. The sentence needs a place where energy comes from.
Correct answer: organic

Explanation: The speaker says "then organic carbon, assuming". It comes before "carbon", so you need a describing word about the type of carbon.

Meaning: "organic" means coming from living things.

Wrong options:

  • organinc: It adds an extra "n". Write "organic". Only the exact spelling gets the mark.
  • inorganic: Inorganic has the opposite meaning. The sentence wants carbon from life.

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