某实验小组试图采用下图中的部分装置来探究“光照是光合作用的必要条件”（以观察装满水并倒置的试管中有无气泡产生作为实验指标），应选择
I went to a park ______ bike .
You are 164cm , I’m 160cm , you are 4cm _____ than me.
______ the matter ? I have a fever .
You ______ sad today .
I faile
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