【名词&注释】
被子植物(angiosperm)、裸子植物(gymnosperm)、虫媒传粉(insect pollination)
[单选题]该区域河流水文特征是( )。
A. 夏季流量小
B. 补给以降水为主
C. 水量向下游增大
D. 径流年际变化小
查看答案&解析查看所有试题
学习资料:
[单选题]若坡度从10°增大到15°,则a点的数值将
A. 增大
B. 减小
C. 先减小后增大
D. 先增大后减小
[单选题]The research mentioned in the last paragraph reports that
A. people with dogs did more exercise
B. dogs lost the same weight as people did
C. dogs liked exercise much more than people did
D. people without dogs found the program unhelpful
[单选题]
A. liveB. lie
B. wait
C. stay
[单选题]裸子植物的胚乳和被子植物的胚乳都是受精后的产物。( )
A. 正确
B. 错误
[单选题]毛茛属(Ranunculus)花瓣基部有一蜜腺穴,为虫媒传粉的标志之一。( )
A. 正确
B. 错误
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