清算总中心负责数字证书的统一管理。
参考答案:错
After a long journey, they came to ______ was called Phenix City.
A.that
B.where
C.what
D.a place
—Oh, it’s you. I didn’t ______ you just now!
—That’s because I have just had my hair cut and I’m wearing new glasses.
A.recognize
B.know
C.see
D.find