The Last question: I. Asimov (synonyms)

Paraphrase: "half in jest"

2 answers are correct

• "half playfully"

• "partly joking"

• "completely serious"

Paraphrase: "a five-dollar bet over highballs"

2 answers are correct

• "a friendly chat over coffee"

• "a wager of five dollars during drinks"

• "a $5 bet over cocktails"

Paraphrase: "cold, clicking, flashing face"

2 answers are correct

• "warm, silent, steady countenance"

• "icy, clacking, flickering appearance"

• "frigid, ticking, sparkling visage"

Paraphrase: "vague notion"

   2 answers are correct

• "fuzzy understanding"

• "precise concept"

• "unclear idea"

Paraphrase: "self-adjusting and self-correcting"

2 answers are correct

• "constantly monitored and externally fixed"

• "automatically adapting and rectifying itself"

• "self-modifying and self-mending"

Paraphrase: "monstrous giant"

2 answers are correct  

• massive titan"

• "tiny creature"

• "enormous behemoth"

Paraphrase: "flipped the switch"

2 answers are correct  

• "turned on the control"

• "locked the door"

• "activated the mechanism"

Paraphrase: "deserted underground chambers"

2 answers are correct 

• "empty subterranean rooms"

• "abandoned below-ground spaces"

• "crowded above-ground areas"

Paraphrase: "contented lazy clickings"

2 answers are correct

• "frustrated, rapid beeps"

• "happy, unhurried clicks"

• "satisfied relaxed sounds of clicking"

Paraphrase: "plagued with throbbing head"

2 answers are correct

• "tormented by aching skull"

• "blessed with a clear mind"

• "suffering from a pounding headache"