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精彩回答
读经纬网和晨昏线图,阴影部分表示夜半球,图示时刻,纽约(西五区)时间为
5个月前
Last Sunday I had a race ________ my father. ( )
7个月前
—种果蝇的突变体在21°C的气温下,生存能力很差,当气温上升到25.5°C时,突变体的生存能力大大提高。这个现象可以说明( )
10个月前
Almost no high school students are _________ (满意) with the school hours in China.
1年前
I don’t know when my father _____ back, but I’ll let you know when he ___back.
1年前