A:流星雨的出现是一种偶然现象
B:流星雨的出现并无规律可循
C:人类终于完全认识了流星雨现象
D:人们对流星雨及其规律的认识能力不断提高
Swimming is my favorite sport.There is________like swimming as a means of keeping fit.
当你想告诉别人你喜欢蓝色时,会说:
There ______a basketball match in our school this afternoon.