血液是由________和_________组成的。
血浆 血细胞
投资项目的性质包括( )。
A.临时性
B.周期性
C.目标性
D.相对性
E.唯一性
—Let's go to the new restaurant on 24th Street for dinner tonight.
—We can cook it at home. It's . [ ]
A. expensive
B. more expensive
C. less expensive
D. the most expensive