34.All that can be done ___. A)have been done B)have done C)has done D)has been done 35.A person beating a drum or blowing a trumpet causes vibrations in the air ___ sound waves. A) calls B) called C) is called D) are called 36.These national parks...
成人高考学位英语备考练习:非谓语动词 一、不定式 (一)基本结构 to do to be doing to have done to be done to have been done 学位英语真题汇编 1、Judging from his manners at the party, he does
3. A deal has been done, but - in the words of Jean-Claude Juncker -implementing it will be a Herculean task. “It is the biggest challenge the EU has ever faced,” he said. It was a sober assessment from the president of the European Commission, w...
(POCT), which can be used in community hospitals, schools and even families for early preliminary screening. The single card and two joint detection of IgM/IgG can effectiv...
Former President Bill Clinton addressed the 18th International AIDS Conference in Vienna Monday. He said while much progress has been made in the fight against the epidemic, much more needs to be done, including on human rights. Mr. Clinton was the...
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