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Practice Listening: Fill in the Blanks (Type In) ID: #33697 Short 3D-printing
Instructions ›
You will hear a recording. Type the missing words in each blank.
* Fill in the missing words into the blank fields
A  new  process  for  3D-printing  things  could  pave  the  way  for  lighter,  faster  aircraft  that    fly  further  on  the  same  amount  of  fuel.  Today’s  Aeroplanes  are  held  together  with  thousands  of  metal  rivets  and  fasteners.  That’s  because  the  lightweight  but  strong  aluminium  alloys  used  for  their  frames  are  considered  unweldable.  Try  to  weld  them  and  you  get  a  phenomenon  called  hot-cracking,  in  which  the  finished  alloy  weakens  and    as  it  cools.  This  and  other  adverse  welding  effects  also  stand  in  the  way  of  3D-printing  high-strength  aluminium  alloy  parts.  When  researchers  have  tried,  the  resulting  laser-fused  mass    away  at  the  welding  area  like  a  stale  biscuit.

Result:

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

Explanation: Listen for "aircraft that potentially fly". You need a word that tells how or how much, so it ends in ly.

Meaning: "potentially" means possibly or maybe.

Wrong options:

  • potentialy: It leaves out the "l". Check the letters: "potentially". A small spelling mistake loses the mark.
  • potential: "potential" is missing the ending. The speaker says "potentially", with "ly" at the end.
Correct answer: fractures

Explanation: On the recording you hear "weakens and fractures as it". Do not forget the s at the end.

Meaning: "fractures" means breaks into pieces or cracks.

Wrong options:

  • fracturs: It leaves out the "e". The right spelling is "fractures". Every letter must be correct to get the mark.
  • fracture: "fracture" has no "s" at the end. The speaker says "fractures", so write the "s".
Correct answer: flakes

Explanation: Listen again to "mass flakes away at the". You need a word for small pieces, so it ends in s.

Meaning: "flakes" means comes off in small thin pieces.

Wrong options:

  • flaks: It leaves out the "e". The right spelling is "flakes". Every letter must be correct to get the mark.
  • flake: "flake" has no "s" at the end. The speaker says "flakes", so write the "s".

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