A:though
B:because
C:until
D:while
2014年2月,中国南极“泰山站”正式建成开站,这是中国在南极建立的第 个科学考察站。
读课文《日出》,填空。
再一看,____,____,____,____,原来是太阳出来了。
在下列各句的每个空格内填上一个适当的、完整的单词,该词的首字母已给。Tom felt too sleepy to keep a____ in history class. I can't follow you. Can you e_____ it to me again?Mary is s____ to be a good learner. Everyone thinks so.Last month 10 persons were killed in the traffic a _____ .He never does anything at home. He isn't a h____ boy. He's a lazy boy.