地钱的假根主要起固着作用,它是由单列细胞构成。
参考答案:对
When Akiyama Toyohiro, Japan's first astronaut, completed his stint in space, he came back down to earth with more than one worry.
A.spell
B.sling
C.sting
D.stink
______对于 旅游 相当于 律师 对于______
A.游客 被告 B.导游 诉讼C.景点 法官 D.游览 辩护