从烟叶生长部位简要说明成熟采收一般原则？

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问题问答题简答题

答案

参考答案：

下部叶：适时早收，成熟度达欠熟至尚熟档次为适熟中部叶：成熟稳收成熟度达成熟档次为适熟期上部叶充分成熟采收顶部4，6片成熟后连同茎秆一起采收

阅读理解

阅读短文，判断下列句子正(T)误(F)。

Hello, my name is Bill. I have a sister. Her name is Lily. She is a nice girl. There is a yellow flower

on her head. Lily has a doll. Look! My train is on the floor. It is very long. I put Lily's doll on the train.

Lily smiles, and I smile, too. We are happy.

( )1. Bill has a sister.

( )2. There is a red flower on Lily's head.

( )3. Bill has a doll.

( )4. The train is very short.

( )5. Bill puts the doll on the train.

多项选择题

则下列说法正确的有( )。

A．4月1日的期货理论价格是4140点

B．5月1日的期货理论价格是4248点

C．6月1日的期货理论价格是4294点

D．6月30日的期货理论价格是4220点