开卷速查 规范特训
举一反三 跳出题海
开卷速查(二) Module 2 My New Teachers
建议用时35分钟 满分41分
Ⅰ.语法填空
阅读下列材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
Why don't birds get lost on their long flights from one place to another?
Not long ago, experiments showed that birds rely __1__ the sun to guide them during daylight hours. But what about birds __2__ fly by night? Tests with artificial stars have proved that certain night flying birds are able to follow the stars in their longdistance flights.
A dove had spent its lifetime in a cage and had never flown under a __3__(nature) sky. Yet __4__ showed an inborn ability to use the stars for guidance. The bird's cage __5__(place) under an artificial starfilled sky. The bird tried to fly in the same direction as that __6__ (take) by his outdoor cousins.
