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【单选题】
目前是一种理想的电极材料，是我国建议尽量采用（）的钨极。A.
纯钨极
B.
钍钨极
C.
铈钨极
D.
锆钨极
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皮皮学刷刷变学霸
举一反三
【判断题】Rick thinks they need one more person to lift the books. ListeningB 1.m4a
A.
正确
B.
错误
【简答题】阅读理解。 Rick is only fif years old, but he's very rich. Two years ago, Rick started a football website for young people. 'I became interested in computers when I was eight because my father worked w...
【简答题】阅读理解。 One day an American called Simon went to London to visit his friend, Rick. Rick told him that his flat was on the first floor. When he arrived, Simon went straight to the first floor of the buil...
【单选题】— Is this your new pencil? — No, I think it is _____. [ ]
A.
Rick
B.
Ricks
C.
Rirks'
D.
Rick's
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