A、 x2+C
B、 x2-x+C
C、 2x2+x+C
D、 2x2+C
答案:B
解析:解析:
A、 x2+C
B、 x2-x+C
C、 2x2+x+C
D、 2x2+C
答案:B
解析:解析:
A. for
B. over
C. in
D. by
A. 《论十大关系》
B. 《不要四面出击》
C. 《论人民民主专政》
D. 《资本主义工业中公私关系问题》
A. were not able to help laughter
B. could not help but laughing
C. could not help laughing
D. could not help to laugh
A. The; the
B. A; the
C. The; /
D. A; /
解析:解析:World War II是专有名词
A. is
B. be
C. should be
D. were
A. 社会主义国家开放
B. 资本主义国家开放
C. 发展中国家开放
D. 全世界开放
A. Not only
B. If only
C. Only
D. Not only was
A. should speak
B. spoke
C. should have spoken
D. speak