As the name suggests, puffer fish can inflate to make themselves seem much larger than they really are, thus scaring off enemies. They do this by filling their stomachs, which are extremely elastic(弹性的), with water. If that’s not enough of a threat, the tiger puffer fish --- like most of the other puffer fish in the family --- carries a deadly toxin(毒素). Eat one puffer fish and the poison will paralyze (瘫痪) your muscles, including the muscles responsible for breathing, so death is usually caused by a lack of oxygen. Famously, the fish is a delicacy in Japan, where highly qualified chefs produce dishes that contain the safe level of the poison. Interestingly, the puffer fish does not go to the trouble of producing the poison itself. Instead, it hosts bacteria (细菌) that produce the stuff. It obtains these bacteria from its diet, so the youngest adult fish are not poisonous.
47.
All of the following statements account for the violence of puffer fish except that_____.
A. they are very difficult to catch
B. they can become larger to threaten enemies away
C. they kill their younger companions as they grow up
D. they are deadly poisonous
48.
We can learn from the second paragraph that puffer fish _____.
A. can only grow to a weight of 0.1g
B. do not change their behavior as they grow up
【2017届高考英语总复习闯关密训卷 Unit1《Breaking records》选修9】相关文章:
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (72)
★ 【浙江专用】2014届高考英语一轮复习课时作业(十四)必修3 Unit 4《Astronomy:the science of the stars》
★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五:解题策略(含解析)
★ 四川省2016届高考英语一轮复习课时作业(35) Module 5 Cloning 外研版选修6
★ 【三维设计】2017届高考英语(江苏专用)二轮复习课件:必修4 Unit 2《Sports events》
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M10《Unit 1 Building the future》
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (11)
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十三)必修5Unit 3《Life in the future》
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21