I didn't understand anything _________. [ ]
A. lot
B. very
C. at all
D. too much
答案:C
我国女性生殖器恶性肿瘤发生率最高的是
A.子宫颈癌
B.子宫肉瘤
C.绒毛膜上皮癌
D.子宫内膜癌
E.卵巢癌
According to its content, a letter contains ______.
A. the purpose of writing the letter B. supporting informationC. sender’s address D. a routine remark