棉花主茎的红绿茎所占比例是诊断棉花长势好坏的一个指标，高产棉花要求苗期红茎比为（）。
参考答案：50%
根据首字母提示或汉语完成单词。
1. His brother is a p_____ tennis player.
2. Everyone in China can get a good e_____ now.
3. Many fans watched him all the time and f_____ him everywhere.
4. There're kinds of f_____ in the garden.
5. What will h_____ if I don't have an ID card?
6.—Who helped me _____ (组织)the activity?
—Jack did.
7. Uncle Wang enjoys _____ (制造)machines.
我国房地产开发统计中采用的是实际销售面积，指报告期已竣工的房屋面积中已正式交付给购房者或已签订销售合同的商品房屋面积，包括已签订预售合同正在建设的商品房屋面积。( )
