—It lies _______ the south of China. It is _______the coast.

把下列句子组成语意连贯的语段，排序最恰当的一项是(　　)
①大气层中的二氧化碳、水蒸气等气体对红外辐射有着非常强的吸收能力。　②地球向外辐射的能量在一定程度上被“截留”下来。　③太阳光照射到地球表面上，有一部分被大气层或者地面反射。　④地球表面以及靠近地面的大气层，变得有如温室一般。　⑤地球被照射后会以红外的长波方式向外辐射能量。

补全对话

A: Hello, Betty. ____ ?

B: Hello, Tony. Our classroom is really big. There are 46 students in my class.

____ ?

A: There are 45 students in my class.

B: ____?

A: Yes, there are two maps on the wall, a map of the world and a map of China.

B: ____?

A: No, there isn't a TV in our classroom. But there is a computer.

B: ____?

A: It's on the teacher's desk. Oh, it's time for class(该上课了). Let's go. Bye.

B: Bye.