IELTS-G 14 Listening test 4 section 4 Questions 31-40

had a semicircle of large stones round a 31Fill in the blank 1 of 1

research carried out into structures, 32Fill in the blank 1 of 1 and human remains

used in the oil industry, e.g. to make 33Fill in the blank 1 of 1

problems: they were expensive and 34Fill in the blank 1 of 1

Marzamemi, Sicily: found ancient Roman ships carrying architectural elements made of 35Fill in the blank 1 of 1

36Fill in the blank 1 of 1 is used for short distance communication, acoustic waves for long distance

AUV can send data to another AUV that has better 37Fill in the blank 1 of 1 ,for example

one carrying 38Fill in the blank 1 of 1 supplies;

tablets may have been used for cleaning the 39Fill in the blank 1 of 1

others carrying containers of olive oil or 40Fill in the blank 1 of 1