A:第一象限
B:第二象限
C:第三象限
D:第四象限
We are glad to hear that the terrorists ________ by the brave policemen several days ago.
①始终贯穿着持续不断的根本的变化
②会提高量变积累到质变的速率
③对不可能摆脱一点一滴的变化
④将凸显质变作为发展起点的地位
—Mum, I have a bad headache. I feel terrible.
—Oh, dear! You must get a cold. You'd better see ___________ after breakfast.
海洋里由浅入深依次生长着绿藻、褐藻、红藻,影响植物这样分布的主要因素是( )