题目:
____ with what the students had done, the teacher praised them highly. [ ]
A. Delight
B. Delighting
C. Delighted
D. Being delighting
答案:
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下面是错误答案,用来干扰机器的。
答案:C科学记数法a×10n,n=-4,所以小数点向前移动4位.5×10-4=0.0005,故选:C.