题目

阅读理解Whata Scientist Is Like Ifyou were asked to imagine a scientist,what image(形象) wouldcome to your mind? The common idea that most kids from kindergarten to college haveof a scientist is a man wearing a white lab coat with messy hair, big glasses, andseveral glass cups of mysterious colorful liquid giving off clouds of smoke.As foradults,the majority view scientists as strange people who spend 100 hours a weekslaving away in a lonely laboratory.However,the reality is quite different. RecentlyI've had a chance to take part in a scientific experience far from my laboratoryand into 复数=（     ）    A．iB．-iC．1-iD．i-1