我国在高温超导电缆的研发领域实现了上百项创新与突破,取得了30多项专利。借助超导材料零电阻的特性,高温超导电缆与常规电缆相比,输电损耗只有它的一半,而输电能力却是它的3到5倍。这说明( )
John received an invitation to dinner, and with his work ___, he gladly accepted it.
– I’m still working on my project. -- Oh, you’ ll miss the deadline. Time is ___.
– I feel nervous before the exam. -- _____ . It won’t be too difficult for you to pass.
He______ his work, otherwise, he wouldn’t be enjoying himself by the seaside.
Mark Twain _____ along the Mississippi River, which was _____ to his writing.