A:looking after
B:look over
C:looking at
D:look for
近年来,中学生中人情消费愈演愈烈。庆祝生日、朋友聚会、毕业留念等互送礼品逐渐成为时尚,礼品档次也越来越高,消费水平远远超出中学生的经济承受能力。对此给我们的启示是( )①恪守勤俭节约 ②理性消费 ③不能盲目攀比 ④人情消费
—Must I do my homework now?
—No, you . You may have a rest.
—Will you please give the dictionary to Jane?
—Sure. I'll give it to her ________ she arrives here.
下列有关稳态的叙述中,错误的是