胰腺癌最常见的临床表现为()。
A.腹痛,黄疸,消瘦
B.腹痛,休克,黄疸
C.腹痛,腹胀,呕吐
D.腹痛,寒战高热,呕吐
E.消瘦,便秘,呕吐
参考答案:A
It's raining heavily outside. He has to stay at home, ______? [ ]
A. has he
B. hasn't he
C. does he
D. doesn't he
十进制整数75等于二进制整数
A.1001011
B.1010101
C.1001101
D.1000111