section a welcome to the unit & reading ⅰ.单词拼写 1. one of the ____________(缺点) of the plan is that it costs too much. 2. ____________(最后) i decided to take this opportunity. 3. he found that little tv extremely ____________ (便携的). 4. nowadays ____________ (数字的) cameras are more and more popular. 5. fruit and vegetables must be cool from field heat
