When did ice come into household use() A: Before the nineteenth century. B: By the mid-nineteenth century. C: Before the Civil War. D: After the Civil War.

Not until the mid-nineteenth century ____ achieve recognition.

English was taught at the beginnning of________century in China. A: nineteen B: nineteenth C: the nineteenth D: the nineteen

It's a drama. It ______ takes place in mid-nineteenth century New York City.

The first engine was invented in the nineteenth century.

已知三阶矩阵$A$满足$\mid A-E\mid=\mid A-2E\mid=\mid A-3E\mid=0$，则$\mid A\mid$=( )。 A: $4$ B: $6$ C: $12$ D: $3$

In the (nineteenth) century, people (lived) in the northern area grew (their) crops on river (bottom lands). A: nineteenth B: lived C: their D: bottom lands

Well over (three-fourths) of that book (on) noted British writers (are) about authors who wrote during (the nineteenth) century. A: three-fourths B: on C: are D: the nineteenth

设$A,B$是$n$阶正交矩阵，且$\mid A\mid=-\mid B\mid$，则( ). A: $A+B$可逆 B: $A+B$不可逆 C: $\mid A+B\mid=1$ D: $\mid A+B\mid=-1$

The Silk Road was noted down by the ____... nineteenth Century.