生物质混燃发电至今无实质性的经济激励政策，主要原因是混入煤炭的生物质原料量较少。( )

The more words you are familiar with, the less you are ...

单项选择题The more words you are familiar with, the less you are aware of reading words and ________ you are aware of content and meaning.
A. more
B. less
C. the more
D. the less

该设备费用总和的最小额度为 （ ） 元。 查看材料A.4956 B.5324 C.5617 D.5667A.4...

单项选择题该设备费用总和的最小额度为 （ ） 元。 查看材料
A.4956
B.5324
C.5617
D.5667

Almost 20% of all American families ________ single par...

单项选择题Almost 20% of all American families ________ single parent families, and in 85% of these families the single parent ________ the mother.
A. are … is
B. are … are
C. is … are
D. is … is