单选题 28. Which of the following sentences is grammatically INCORRECT? ______

A、 It is true that practice makes perfect.
B、 The factories can now keep up a steady production flow.
C、 The workers are working on this new project in spite that the expenses have risen.
D、 As is known to all, home is where the heart is.

【正确答案】 C

【答案解析】 语法规则题。根据题意可知，本题需要选出一个有语法错误的句子。C中的in spite that表述错误，应改为despite that，因此答案为C。