IELTS Listening Practice Test
Creating Artificial Gills
Taking in oxygen: mammals - lungs; fish - gills
Long-held dreams - humans swimming underwater without oxygen tanks
Oxygen tanks considered too
and large1heavy
Attempts to extract oxygen directly from water
1960s - prediction that humans would have gills added by
2surgery
Ideas for artificial gills were inspired by research on
fish gills
fish swim bladders
animals without gills - especially bubbles used by
3beetles
Make a watertight box of a materiaI which lets
pass through4gas
Fill with air and submerge in water Important that the diver and the water keep
5moving
The gill has to have a large
6surface area
Designers often use a network of small
on their gill7tubes
Main limitation - problems caused by increased
in deeper water8pressure
Supplying oxygen for use on
9a submarine / submarines
Powering
cells for driving machinery underwater10fuel
ĐÁP ÁN & GIẢI THÍCH CÂU 1
Mình cần nghe xem Oxygen tank quá large và gì (Oxygen tanks considered too .... and large)
=> Biết đáp án sắp tới khi nghe "breathing without the help of oxygen tanks"
Nghe thấy "it's generally agreed that tanks are too heavy and big"
=> Bình oxy thường quá nặng và to (big = large)
=> Đáp án: heavy 
Lưu ý
- Nội dung giải thích được viết bởi DOL IELTS Đình Lực - Học Viện Tiếng Anh Tư Duy đầu tiên tại Việt Nam
- Đề được viết bởi nhà xuất bản lớn gồm Cambridge và Oxford