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问题 问答题 简答题

水稻返青分蘖期的生育特点是什么？

答案

参考答案：水稻返青后进入分蘖期。此期水稻营养器官迅速生长，根系迅速扩大，逐步形成健壮根群，叶片不断生出，光合面积不断扩大，分蘖发生，是决定水稻有效穗数的关键时期，也是水稻一生氮素代谢最旺盛的时期。

填空题

Complete the following passage with the words or phrases in the box．Each can only be used once(将下列单词或词组填入空格。每空格限填词，每词只能填一次)(共8分)

Do you know what is special about November and June in the UK? They are，possibly，the only two months with no school holidays．A newspaper did a survey among a group of student．In the survey，68 percent of the student said that their parents were at work in the school holidays．73 percent said that they were bored during the school holidays and 35 percent said they were happy to go back to school! The of the survey show that not everybody wants to have many holidays．

If you don‟t want to stay at home and get bored，go out and some interesting activities．A lot of school organize various trip during the holidays，especially when they have a one-week holiday．You have many to make．

Many school take groups of students to some training centres．There students can learn a lot from activities．For example，students learn how to make a camp in the forest．They also learn more about animals and plants．At the same time，they are taught how to find their way back to the centre．

In most town，some other centres students different courses，such as computer game design，film making and painting．Students can also for school trips．They can practice their foreign languages and experience everyday life in different cultures．
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多项选择题

下列关于有机磷农药中毒应用阿托品注意事项的叙述正确的有（）.

A.阿托品不能用来预防有机磷农药中毒

B.阿托品对烟碱样作用无效，故不能制止肌肉纤维震颤及抽搐，对呼吸肌麻痹也无效

C.用阿托品治疗重度中毒的原则是"早期、足量、重复给药"

D.严重缺氧的中毒患者，使用阿托品时有发生心室颤动的危险，应同时给氧

E.阿托品化的指征是瞳孔扩大、面部潮红、皮肤干燥、口干、心率加快
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