读“黄道平面与赤道平面的交角图”,回答下列各题。下列说法正确的是:
如果黄赤交角变大,下列说法正确的是:①热带范围扩大,温带范围减少 ②地轴与赤道面夹角变小,与黄道面夹角变大③全球出现极昼、极夜的区域范围扩大 ④太阳直射点南北移动范围扩大
------Must I finish my homework now ? ------No, you _________ . You can do it tomorrow .
We be too careful while dealing with these social problems.
——He can write well. ——He_____, but he doesn’t. He’s too lazy.
Rick has learned a lot about Chinese culture _____ he came to China.
--Sorry, I overslept. I forgot to set the alarm. --Your clock ________. Perhaps you should buy a new one.