作业帮The H7N9 bird flu is a disease ______ can be very dangerous.A./ B.who C.what D.which （请说明理由）
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 16:48:51
The H7N9 bird flu is a disease ______ can be very dangerous.A./ B.who C.what D.which （请说明理由）
The H7N9 bird flu is a disease ______ can be very dangerous.A./ B.who C.what D.which （请说明理由）
The H7N9 bird flu is a disease ______ can be very dangerous.A./ B.who C.what D.which （请说明理由）
选D which作为连接词把两句话接起来的.这里which指代bird flu.