問題詳情

Cloze Test (20%)  1.Historically, Bristleworms have had a bad reputation among saltwater aquariumaficionados. These marine worms usually enter the hobbyist's aquarium by __21__ aride on a piece of coral. Once established, they become part of the tank's ecosystem.Bristleworms ___22___ greatly in size. The smallest ones are about an inch long, andthe large ones can grow to over 20 inches, although, being segmented, their bodies areoften ___23___ and so not usually seen at their greatest extent. Literature hasfrequently __24__that bristleworms are harmful, asserting that they eat clams,anemones and even coral fish. However, most enthusiasts now conclude that smallbristleworms __25__ no threat, and are merely scavengers, clearing the tank fromdetritus and carcasses of animals that are already dead. However, larger worms,particularly those of the species known as fireworms, are __26__eaters and can doirreparable damage. These worms are better removed, although this is a challenge initself, as the worms are nocturnal, sensitive to light and will go into hiding at theslightest disturbance.
21.
(A) attaching
(B)tethering
(C)hitching
(D) lifting

參考答案

答案：C
難度：困難0.266667
統計：A(5),B(3),C(4),D(2),E(0)

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