---What does he want to do after he finishes middle school?

---He has made up his mind to join the army rather than______ to college.

A．go

B．going

C．went

D．goes

地球的外部圈层包括（）

A.大气圈、水圈、地壳

B.大气圈、水圈、生物圈

C.地壳、地幔、地核

D.岩石圈、水圈、上地幔