接合
参考答案：遗传物质通过细胞间的直接接触从一个细胞转入到另一细胞而表达的过程称为接合。
Bowling ________ by people all over the world.[ ]
A. plays
B.is playing
C.is played
D. are played
基坑支护是保证整个地下施工，对基坑采取的保护措施。
