题目内容
The new English teacher as well as the excited students _____ a new English song on the Internet.
A. are learning B. is learning C. have learned D. has been learned
B
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题目内容
The new English teacher as well as the excited students _____ a new English song on the Internet.
A. are learning B. is learning C. have learned D. has been learned
B
Antarctic seabirds are breeding（繁殖）later, because thinner sea ice is causing their food supplies to decline, a new study says. The birds, which nest in East Antarctica, have delayed their spring arrival by an average of nine days and egg-laying by an average of two days over the past 50 years, according to polar researchers from the French National Center for Scientific Research in Villiers en Bois, France, study authors Christophe Barbrand and Henri Weimerskirch attribute this later breeding activity to decreases in sea ice caused by climate change. 
Only one of the ancient wonders of the world still survives — now history lovers are being invited to choose a new list of seven.