搜题请搜索小程序“爱下问搜题”
问题 选择题

雅鲁藏布江谷地一带种植的青稞和小麦穗大粒饱的原因是（　　）

A．水源充足，热量丰富

B．日照时间长，昼夜温差大

C．气温较低，没有病虫害

D．地势高，土壤肥沃

答案

青藏高原气候高寒，农业主要分布在地势较低的湟水谷地、雅鲁藏布江谷地也就是藏南谷地．它们相对青藏高原的其他地区来说，主要有晴天多、日照时间长、太阳能丰富、地势平坦、水源较为充足等优势条件，单位面积产量较高．

故选：B．

单项选择题

Ban the Band

Every year, our school has a dance for all the students. It’s a little funny seeing friends in clean shoes and trousers or colorful (1) , instead of the usual school uniform.

Most of us think the dance is great (2) even the teachers enjoy being there. (3) , two weeks ago someone said that there would be no (4) band this year— only CDs. "I don’t (5) it!" Amy cried out during the lunch break.

"Someone said the school couldn’t (6) a band, and they think it’s too noisy anyway, "added Daniel.

"Well, I don’t think it’s (7) enough without a band!" declared Angela, "and I’m going to see what can be done. "

Angela was as good as her (8) . In the afternoon she went to see the school headmaster who agreed to give the (9) some more thought. And he suggested that one (10) for having a band was to increase the price of each ticket from MYM5 to MYM10. Angela had to (11) out whether the students would like to do that."I need all of you to help me, " she (12) to our group before school the next day. "Mr. Berry gave me a list of all the names, and suggested we ask each one their (13) about the band and the extra cost. " (14) the day we asked around as Angela suggested, and wrote down people’s feelings about the band and the cost. We were amazed how much (15) there was for the band and everyone agreed to pay the extra MYMS."I’m surprised, " smiled Mr. Berry, when we gave him the (16) . "I really thought that only a few people (17) their band and that the cost would be too high. OK. Angela, your next (18) is to find a good band and line them up for the dance. "Angela was all smiles and (19) the news to Amy and Daniel. "You’re (20) , " smiled Daniel to Angela as he thought how close they came to having a less than perfect dance.

1（）

A.shapes 

B.dresses 

C.flowers 

D.pictures
查看答案
问答题 简答题

渠系建筑物在管理运用中主要的检查与养护内容有哪些？
查看答案