W: Good morning, Mr. Smith. Did you sleep well last night after your long flight

M: Good morning. Yes, I did. I feel totally rested and I’m now ready for our meeting.

What do we learn about the man （）

A. He slept well on the plane.

B. He had a long trip.

C. He had a meeting.

D. He watched a film.

有关物种的叙述中，正确的是（）①一个种群就是一个物种②具有一定的形态和生理功能，能相互交配且产生可育后代的一群生物个体③隔离是新物种形成的必然条件④在物种形成的过程中一定有地理隔离

A.①②③

B.②③

C.②④

D.①④