问题 问答题 论述题

由于温室樱桃栽培经济效益较高,因此,农民老王从1999起搞起了设施樱桃栽培,2001年大量结果,取得了较高的效益,但是随后出现了隔年结果问题,2002年产量低,2003年产量增高,2004年又降低,这使老王伤透了脑筋,只好求助当地技术人员,假如你作为技术人员,利用你所学的专业知识,请帮助老王分析一下产生这种现象的原因,在生产上如何去预防此类现象的发生。

答案

参考答案:

原因:

(1)花芽分化认识有误,肥水供应时期不当落花后20~25天开始,落花后80~90天基本结束。

(2)负载量过大,营养供应不足

(3)受二次花的影响叶片枯焦、早期落叶、高温干旱、采收后修剪过重

防止隔年结果措施

(1)合理负载、及时疏花、疏蕾和疏果

(2)花芽分化期增施叶面肥

(3)花芽分化期及时补水

(4)防止二次开花

(5)生长期间改善通风透光条件

(6)勤摘心、勤拉枝、防止树冠郁密

完形填空

阅读短文,完成有关任务。

It is said that more than four million people die each year from smoking. That number is frightening.

Yet people around the world continue to smoke. In the United States, about forty-seven-million adults smoke. This year, more than 430,000 Americans died of diseases which have something to do with smoking. The American Cancer Society(美国癌症协会)says smoking harms the body greatly. It warns that smoking even a number of cigarettes is dangerous.

It’s (63) ______________________________(戒烟是不容易的。)However, doctors say you probably will live longer if you do stop smoking. You will feel better and look better. You also will protect the health of family members who breathe your smoke.

There is not one right way to stop smoking, doctors say. Any way can help. You can take long walks or spend time in places where smoking is not allowed. Also, you can eat a small piece of fruit or vegetable instead of having a cigarette. (64)The sooner you stop smoking, the more youll reduce (减少) your chances of getting cancer and other diseases.

Stop smoking before smoking stops you!

(一)根据短文内容,简要回答下列问题。

小题1:How many people die from smoking each year?

                                               

小题2:What does the American Cancer Society say about smoking?

                                               

(二)根据短文中所给汉语完成句子。

小题3:It’s______________________________________________________.

(三)把短文中划线的句子翻译成汉语。

小题4:_________________________________________________________.

(四)给短文拟一个恰当的英文标题。

小题5:_________________________________________________________

单项选择题