《2025年学霸提优大试卷八年级英语上册译林版》

( )36. According to the passage, blue holes ______.
① are sea caves far below sea level
② give off bright blue light
③ have life forms but no oxygen and light
④ are found mostly on islands
⑤ include three layers in all
A. ①②⑤ B. ②③④ C. ③④⑤ D. ①③④
D
( )37. 新考法 补全文章题 Which of the following can be put in “★”?
A. Why are blue holes in the colour of the sky?
B. But not all of these cave systems have blue surfaces.
C. What life forms can be found there?
D. How can water in blue holes change colour?
B
( )38. The underlined word “this” in Paragraph 3 refers to “______”.
A. the layer of freshwater B. anoxic seawater C. the layer of saltwater D. bacteria living
C
( )39. Blue holes are little understood perhaps because ______.
A. few instruments can be used for search
B. divers can not ensure their survival there
C. the caves are full of poisonous matter
D. they have ever-changing conditions
A
( )40. When exploring blue holes, divers must ______.
A. bring one set of breathing equipment
B. be careful enough with their air supply
C. have a thin rope as a guideline anytime
D. swim as quickly as possible to save time
B

答案： 36. D 37. B 38. C 39. A 40. B