单项选择题
A．through great social revolution B．through automotive technological revolution C．through numerous mechanical inventions D．through radical political reforms
The first paragraph tells us the author （）A．was interes...
单项选择题The first paragraph tells us the author （）
A．was interested in flowers and insects in his childhood B．lost his hearing when he was a child C．didn’t like his brothers and sisters D．was born to a naturalist’s family
21（）A．AsB．LikeC．SinceD．Because
单项选择题21（）
A．As B．Like C．Since D．Because
A．ought B．drought C．thought D．bought
填空题
