宁家骏委员指出,我国民生领域信息化服务水平显著提升。
参考答案:对
—What do you think of the book?
—Oh,great.It’s a second time.
A.worth to read
B.worth of reading
C.worthy to be read
D.worthy of reading
简述细胞骨架的分类及其生物学功能。