人类发现了放射性同位素以后，很快便将它应用在生物学的研究中，为探明许多生命的奥秘起了很重要的作用。如果用含¹⁸O的水浇灌某盆栽植物，并将该盆栽植物置于光照下。过一段时间，在植物周围的空气中，能够收集到哪些含¹⁸O的气态物质？这些物质是由植物体内的哪些生理过程产生的?完成下表。

补全对话。

A: Hello! 28361579.

B: Is 1              Mr. Jones?

A: Sorry, he 2              in at the moment. He left home a few minutes 3             .

B: 4              a pity! Will he come back soon?

A: I'm not sure. Can I 5              a message for him?

B: It's very 6              of you. There will 7              a meeting at 2:00 tomorrow afternoon.

    Please tell him to come 8              time.

A: I certainly will. I'll tell him as 9              as he comes back.

B: Thanks a lot. Good-bye!

A: You're 10             .