informant的动词是：_____________________ speculate的名词是：______________________ 形容词是：__________________________

Scientists ________ on the origin of the universe A: guess B: imagine C: speculate D: talk

"That, of course, is pure _______ , unsupported by evidence," Grove wrote. A: speculate B: speculation C: speculates D: speculated

The sunrise seen from high in the mountains was a tremendous ______. A: silence B: animal C: speculate D: spectacle

中国大学MOOC: The ____ about who will take over when you are no longer around is damaging to the company. （speculate）

The trade unions ______ employers to invest more money in staff training. A: urged B: speculate C: entertained D: deceived

So far, the police can only ______ on the possible motives for the killing. A: conceive B: speculate C: assume D: imagine

We can______ over the ways and means before the construction work starts. A: reckon B: speculate C: ponder D: presume

Pursue not so much the material as the ideal, for ideals alone _______ life with enduring worth. A: invest B: speculate C: undertake D: include

The university is conducting a survey to invite both the professors and students to _______ the instructional materials and identify needs for technical support. A: speculate B: evaluate C: calculate D: accelerate