黄系统用哪个数字标识

The fact came up      （）   specific speech sounds are recognized by babies as young as 6 months old.

There is little doubt  （）       her advice is of greater value to us.

Some of the scientists held the point    （）           the book said was right.

The professor said he could talk on （）      interested the audience.

---Are you still thinking about yesterday＇s game? ---Oh, that＇s（）
         .

made the school proud was（）         more than 90% of the students had been admitted to key universities.

It is pretty well understood  （）      controls the flow of carbon dioxide in and out the atmosphere today.

The teacher asked all the students in the class to keep their eyes   （）    .

They want to make it clear to the public   （）     they do an important job.

Our hometown is quite different from （）      before.