简述Osler结节的含义。
参考答案：Osler结节：感染性心内膜炎患者手指和脚趾垫出现的豌豆大的红色或紫色痛性结节，较常见于急性患者。
To our surprise, the 60-year-old granny driver eventually and drives well.
A．became
B．has become
C．turned
D．has turned
让小海龟用正方形、长方形和圆拼成一辆汽车。(此程序为LOGO语言编写)
TO ZHENGFX REPEAT4[FD 50 RT 90] END TO CHANGFX REPEAT___(51)___[FD 100 RT 90 FD 150 RT 90] END TO YUANX REPEAT 36[RT 5 FD___(52)___RT 5] END 圆形的直径是35。 TO QC ZHENGFX LT 90 PU FD___(53)___RT 90 PD ___(54)___RT 90 FD 30 YUANX FD 140 ___(55)___ END
52().
