通过对饭店消费者性别的分析我们发现：男女性别消费者在消费行为上没有区别。
参考答案：错
读句子，根据句子内容选词填空。
( buy, cut, water, costs, expensive )
1. Matt sometimes has to the grass on Saturday.
2. They have four plants. They them every day.
3. The coat is great. It____only $ 20.
4. The Kids want to____Daniel a birthday gift.
5. The book is too ____I can't buy it.
真核生物蛋白质生物合成时不需要的物质是
A．mRNAB．转肽酶C．GTPD．EFTu、EFTsE．蛋氨酰-tRNA
