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Practice Reading: Fill in The Blanks (Drag & Drop) ID: #31665 Mini helicopter
Instructions ›
In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
* Drag the correct answer into all target fields
A  mini  helicopter  modelled  on  flying  tree  seeds  could  soon  be  flying  overhead.  Evan  Ulrich  and  colleagues  at  the  University  of  Maryland  in  College  Park  turned  to  the  biological  world  for  inspiration  to  build  a  scaled-down  helicopter  that  could  mimic  the  properties  of  full-size  aircraft.  The  complex    of  full-size  helicopters  gets  less  efficient  when  shrunk,    that  standard  mini  helicopters  expend  most  of  their  power  simply  fighting  to  stay  stable  in  the  air.  The  researchers  realised  that  a  simpler  aircraft  designed  to  stay  stable  passively  would  use  much  less  power  and  reduce  manufacturing  costs  to  boot.  It  turns  out  that  nature  had    them  to  it.  The  seeds  of  trees  such  as  the  maple  have  a  single-blade  structure  that    them  to  fly  far  away  and  drift  safely  to  the  ground.  These  seeds,  known  as  samaras,  need  no  engine  to  spin  through  the  air,  thanks  to  a  process  called  autorotation.  By  analysing  the  behaviour  of  the  samara  with  high-speed  cameras,  Ulrich  and  his  team  were  able  to  copy  its  design.  The  samara  copter  is  not  the  first  single-winged  helicopter–  one  was  flown  in  1952,  and  others  have  been  attempted  since  –  but  it  is  the  first  to  take  advantage  of  the  samara's  autorotation.  This  allows  Ulrich's  vehicle  to    some  neat  tricks,  such  as  falling  safely  to  the  ground  if  its  motor  fails  or  using  vertical  columns  of  air  to  stay  aloft  indefinitely.  "We  can  turn  off  the  motor  and  auto-rotate,  which  requires  no  power  to  sustain,"  says  Ulrich.

regret take meaning design allows perform beaten stepped

Result:

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Correct answer: design

Explanation: The word 'design' fits grammatically as a noun that refers to the arrangement or plan of full-size helicopters. It aligns with the context of discussing the efficiency of helicopter structures.

Meaning: Design refers to the plan or arrangement of something, in this case, the structure of helicopters.

Wrong options:

  • stepped: 'Stepped' is an adjective that describes a physical feature and does not fit as a noun in this context.
  • take: 'Take' is a verb that does not relate to the noun form needed here.
  • meaning: 'Meaning' is a noun that refers to the significance of something, which does not fit the context of helicopter structures.
  • beaten: 'Beaten' is a past participle that does not serve as a noun and does not fit grammatically.
  • regret: 'Regret' is a noun that expresses sorrow or remorse, which is irrelevant in this context.
  • perform: 'Perform' is a verb that does not fit as a noun in this context.
Correct answer: meaning

Explanation: The word 'meaning' serves as a noun that indicates the significance or implication of the previous statement about efficiency. It fits grammatically and contextually as it explains the consequence of the design issue.

Meaning: Meaning refers to the significance or interpretation of something, in this case, the implication of helicopter efficiency.

Wrong options:

  • stepped: 'Stepped' is an adjective that does not convey significance and does not fit the context.
  • take: 'Take' is a verb that does not relate to the noun form needed here.
  • design: 'Design' is a noun that refers to the arrangement of something, which does not fit as a consequence in this context.
  • beaten: 'Beaten' is a past participle that does not convey meaning and does not fit grammatically.
  • regret: 'Regret' is a noun that expresses sorrow, which is irrelevant in this context.
  • perform: 'Perform' is a verb that does not fit as a noun in this context.
Correct answer: beaten

Explanation: The word 'beaten' is the past participle of 'beat' and fits grammatically as it indicates that nature has already achieved something before the researchers. It aligns with the context of nature providing a solution.

Meaning: Beaten means to have been surpassed or outdone, indicating that nature has already accomplished what the researchers are trying to achieve.

Wrong options:

  • stepped: 'Stepped' is an adjective that does not fit the context of surpassing or achieving something.
  • take: 'Take' is a verb that does not fit as a past participle in this context.
  • meaning: 'Meaning' is a noun that does not convey the action of surpassing and does not fit grammatically.
  • design: 'Design' is a noun that does not fit as a past participle in this context.
  • regret: 'Regret' is a noun that expresses sorrow, which is irrelevant in this context.
  • perform: 'Perform' is a verb that does not fit as a past participle in this context.
Correct answer: allows

Explanation: The word 'allows' is a verb that fits grammatically as it indicates the capability of the single-blade structure to enable the seeds to fly. It aligns with the context of describing the function of the samara.

Meaning: Allows means to enable or permit something to happen, in this case, the seeds to fly.

Wrong options:

  • stepped: 'Stepped' is an adjective that does not convey the action of enabling and does not fit grammatically.
  • take: 'Take' is a verb that does not fit the context of enabling flight.
  • meaning: 'Meaning' is a noun that does not fit as a verb in this context.
  • beaten: 'Beaten' is a past participle that does not convey the action of enabling and does not fit grammatically.
  • regret: 'Regret' is a noun that expresses sorrow, which is irrelevant in this context.
  • perform: 'Perform' is a verb that does not fit the context of enabling flight.
Correct answer: perform

Explanation: The word 'perform' is a verb that fits grammatically as it indicates the actions that the samara copter can execute. It aligns with the context of describing the capabilities of the helicopter.

Meaning: Perform means to carry out or execute an action, in this case, the tricks that the samara copter can do.

Wrong options:

  • stepped: 'Stepped' is an adjective that does not convey an action and does not fit grammatically.
  • take: 'Take' is a verb that does not fit the context of executing tricks.
  • meaning: 'Meaning' is a noun that does not fit as a verb in this context.
  • beaten: 'Beaten' is a past participle that does not convey the action of executing tricks and does not fit grammatically.
  • regret: 'Regret' is a noun that expresses sorrow, which is irrelevant in this context.
  • allows: 'Allows' is a verb that does not fit the context of executing tricks.

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