一个正方形按3:1放大后,周长和面积都扩大到原来的3倍。 [ ]
错误
A terrible earthquake ______ in Lushan County, Sichuan Province,______ about 200 people.
A.took place ; killing
B.was taken place; killing
C.took place; killed
D.was taken place; killed
专业技术人员应当具有丰富的知识,知识面要宽,专业知识要扎实,要能够做到百问不倒。说明专业技术人员应具备的能力是()。
A.渊博的知识
B.正确的动机
C.解放的思想
D.顽强的性格