professor Nels on wanted to know__.

问题描述:

professor Nels on wanted to know__.
professor Nels on wanted to know__.1what is the spaceship like 2what the spaceship looks like3how the spaceship looks like 4how does the spaceship look like

选2.
首先要填的内容是know的宾语从句,应使用陈述句语序,故排除1,4.
其次,look like后缺少宾语,应用what提问.故选2.