She was _______that she could pass the driving test this time.
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It is our _______to have you here, sir
The exam questions were quite _________
The following is a list of terms related to the real estate industry(房地产行业). After reading it, you are required to find the items equivalent to those given in Chinese in the table below. Then you should mark the corresponding letters with a line through the center in order of the numbered blanks, 51 through 55, on the Answer Sheet.
乙醇和甲醚的分子式都是C2H6O,下列说法正确的是
A. 属于同一物质
B. 互为同分异构体
C. 互为同系物
D. 同位素