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Friday, September 25, 2020

Reading and writing fill in the blanks practice exercise. Below is text with blanks. Choose the correct word for each blank to complete the text.

Medical devices like implanted arteries or external dialysis (1) ………………….. keep people alive. But persistent problems exist. Blood flowing through tubes can form dangerous clots. So,  bacteria that stick to surfaces could start infections.  (2) …………………… for patients using such devices thus often includes anticlotting agents such as heparin. But such (3) ……………………. have their own risk: by interfering with clotting, they can cause potentially deadly (4)………………………… Recently, (5) ………………………. at the Wyss Institute for Biologically Inspired Engineering at Harvard University looked to a carnivorous pitcher plant for guidance. The plant’s (6) ……………. includes wells with surfaces too slippery for the insects to crawl out of. Those surfaces inspired the development of a coating so slippery that it prevents blood and bacteria from sticking. The team tested the coating on the (7) ………………. of tubes and catheters attached to pigs. And they demonstrated that coating did not degrade, and that blood kept flowing without clotting, for eight hours.

(1) misdeeds, seas, peaks, machines
(2) Treatment, Receded, Pretreatment, Leaflet
(3) stomachers, articles, substances, slanderers
(4) beseeching, bleeding, institutionalizing, cheeping
(5) researchers, wieners, protectors, grievances
(6) ultra, manner, structure, aqua
(7) antibacterial, beside, and, interiors

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