棉花红腐病主要症状是什么?
参考答案:
在棉苗未出土前受害。幼芽变棕褐色腐烂死亡;幼苗受害,幼茎基部和幼根肥肿变粗,最初呈黄褐色,后产生短条棕褐色病斑,或全根变褐腐烂。
单词拼写(每小题1分,共10分)
小题1:These clothes are 100%______(纯的)cotton.
小题2:He was too young and ______(肤浅) to understand his parents’ love.
小题3:Without______(暂停)we jumped into the boat with the other whalers.
小题4:I have to prepare tomorrow’s lessons and do some______(文书工作).
小题5:Please call me before you buy a new______(数码的)camera.
小题6:The work took a whole ______(两周)。
小题7:Do you want to be an______ (宇航员)in the future?
小题8:He returned to his ______(祖国) after graduation.
小题9:The other day I was showing the boys the_______(每周的) experiment.
小题10:Last______(十二月)we went to the Great Wall.
在中外进出口铁矿石谈判期间,澳大利亚力拓公司上海办事处首席代表胡士泰(澳大利亚籍)等人采取不正当手段,窃取了中国国家机密。事后,澳洲外长威胁说:“中国若不放人,将遭制裁!”2010年3月,我国司法机关依法独立审理,并做出 “胡士泰被判十年徒刑” 的一审宣判。这体现了我国作为主权国家享有
①独立权 ②自卫权 ③平等权 ④管辖权
A.①②
B.②④
C.①④
D.③④