跪求几道英语单选题答案~~~~~

来源:百度知道 编辑:UC知道 时间:2024/05/20 21:00:12
25 单选题
Most animals have little connection with animals of different kind, unless they hunt them for food. Sometimes, however, two kinds of animals come together in a partnership (伙伴关系) which does good to both of them. You may have noticed some birds sitting on the backs of sheep. This is not because they want a ride, but because they find easy food in the parasites (寄生虫) on sheep. The sheep allow the birds to do so because they remove the cause of discomfort. So although they can manage without each other, they do better together.
Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals (珊瑚) of the sea. In their skins they have tiny plants act as "dustman", taking some of the waste products form the corals and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are ever prevented from lighting so that they cannot live normally, the corals

b, b, d, a(大众,民众), b(挂断), b(总有一天)。望满意。

bbdabb

25 The underlined word "they" in the last sentence of the first paragraph refers to __.

b、birds and sheep

26 A(n) _____ amount of money was lost in the fire.
a、mass (不能用于money)
b、numerous (用于可数名词)
c、abundant (罕见用于money)
d、substantial (正确选择)

It can be learnt from the text that the coral depends on the plant for __.
d、oxygen

28 The _______ gathered around the square to listen to the speech.
a、multitude

29 He _______ the phone quickly and went to open the door.
b、hung up

30 They knew that _______ the war would come to an end soon.
c、somehow