1．According to Paragraph 1, transparent animals ________．

　　A．stay in groups

　　B．can be easily damaged

　　C．appear only in deep ocean

　　D．are beautiful creatures

　　2．The underlined word “dead” in Paragraph 3 means ________．

　　A．silently

　　B．gradually

　　C．regularly

　　D．completely

　　3．One way for animal to become transparent is to ________.

　　A．change the direction of light travel

　　B．gather materials to scatter light

　　C．avoid the absorption of light

　　D．grow bigger to stop light

　　4．The last paragraph tells us that larger transparent animals ________．

　　A．move more slowly in deep water

　　B．stay see－through even after death

　　C．produce more tissues for their survival

　　D．take effective action to reduce light spreading

　　Passage 3

　　(2015·陕西高考)Parents who help their children with homework may actually be bringing down their school grades.Other forms of parental__involvement,__including volunteering at school and observing a child’s class，also fail to help，according to the most recent study on the topic.

　　The findings challenge a key principle of modern parenting (养育子女) where schools expect them to act as partners in their children’s education.Previous generations concentrated on getting children to school on time, fed，dressed and ready to learn.

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