染料向纤维内部扩散的扩散系数D越大，表示扩散活化能越高

Young ______he was, she was equal to the task.A.asB.bec...

未知题型Young ______he was, she was equal to the task.
A.as
B.because
C.if
D.unless

A、正确 B、错误

单项选择题
A、正确
B、错误

The number of registered participants in this year’s ma...

未知题型The number of registered participants in this year’s marathon was half________.
A.of last year
B.those of last year’s
C.of those last year
D.that of last year’s