Speaking of all the songs he has written, I think this is probably his____one. better-known B. well-known C. best-known D. most-known 答案:C 解析: best-known是well-known的最高级,意为“最著名的”。根据所提供的情景“all of the songs he has written”可判断出要用形容词的最高级,表示“这可能是他最著名的一首歌”。better-known是well-known的比较级,用于比较两者哪一个更著名。
已知两圆半径分别为2和3,圆心距为d,若两圆没有公共点,则下列结论正确的是
[ ]
A.
0<d<1
B.
d>5
C.
0<d或d>5
D.
0≤d<1或d>5