2009年7月22日,近500年在中国境内持续时间最长的日全食景观如约上演,前后持续长达两个多小时,近3亿人可以观测到这场难得的天象盛宴。人们能够准确预测日食,说明
—Look out! The bus is coming! —Thank you. I will wait a moment.
"Could you please tell me_________?" "It's next to the hotel. " A. where is the museum B. the museum is where C. where the museum is
Mary Smith says she likes to have friends_________ are different from her. A. whose B. who C. which
"How much money did you_________ in fixing your watch?" "About ten yuan. " A. cost B. pay C. spend
When you leave the reading room, you should remember to _____ the lights. A. turn onB. turn down C. turn off