①CH3Cl②CH2Cl2 ③CHCl3④CCl4⑤HCl.
A.只有①②③
B.只有②④⑤
C.只有①②③④
D.全部
答案:D
There is ________ snow in the northern part of China. [ ]
A. many
B. a lot of
C. a great many
D. a large number of
“指如削葱根,口如含朱丹,纤纤作细步,精妙世无双。”请问这句话出自于哪部作品?