18. A hot air balloon will rise when its density is lower than ________ of the surrounding air.
(A) which
(B)what
(C)that
(D)those
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統計: A(204), B(65), C(368), D(246), E(0) #1458772
統計: A(204), B(65), C(368), D(246), E(0) #1458772
詳解 (共 5 筆)
#1520062
比較級、最高級關代用that
76
2
#4254289
這題不是考關代吧
就單純代名詞 that 表前方提過的density
10
0